This information is produced and provided by the National Cancer Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National Cancer Institute via the Internet web site at http://cancer.gov or call 1-800-4-CANCER.
Fortunately, cancer in children and adolescents is rare, although the overall incidence of childhood cancer has been slowly increasing since 1975. Children and adolescents with cancer should be referred to medical centers that have a multidisciplinary team of cancer specialists with experience treating the cancers that occur during childhood and adolescence. This multidisciplinary team approach incorporates the skills of the primary care physician, pediatric surgical subspecialists, radiation oncologists, pediatric medical oncologists/hematologists, rehabilitation specialists, pediatric nurse specialists, social workers, and others to ensure that children receive treatment, supportive care, and rehabilitation that will achieve optimal survival and quality of life. (Refer to the PDQ Supportive and Palliative Care summaries for specific information about supportive care for children and adolescents with cancer.)
Guidelines for pediatric cancer centers and their role in the treatment of pediatric patients with cancer have been outlined by the American Academy of Pediatrics. At these pediatric cancer centers, clinical trials are available for most types of cancer that occur in children and adolescents, and the opportunity to participate in these trials is offered to most patients/families. Clinical trials for children and adolescents with cancer are generally designed to compare potentially better therapy with therapy that is currently accepted as standard. Most of the progress made in identifying curative therapies for childhood cancers has been achieved through clinical trials. Information about ongoing clinical trials is available from the NCI Web site.
Dramatic improvements in survival have been achieved for children and adolescents with cancer. Between 1975 and 2002, childhood cancer mortality has decreased by more than 50%. For Hodgkin lymphoma, the 5-year survival rate has increased over the same time from 81% to more than 94% for children and adolescents. Childhood and adolescent cancer survivors require close follow-up because cancer therapy side effects may persist or develop months or years after treatment. (Refer to the PDQ summary on Late Effects of Treatment for Childhood Cancer for specific information about the incidence, type, and monitoring of late effects in childhood and adolescent cancer survivors.)
Overview of Childhood Hodgkin Lymphoma
Childhood Hodgkin lymphoma is one of the few pediatric malignancies that shares aspects of its biology and natural history with an adult cancer. When treatment approaches for children were modeled after those used for adults, substantial morbidities (primarily musculoskeletal growth inhibition) resulted from the unacceptably high radiation doses. Thus, new strategies utilizing chemotherapy and lower-dose radiation were developed. Approximately 90% to 95% of children with Hodgkin lymphoma can be cured, prompting increased attention to devising therapy that produces less long-term morbidity for these patients. Contemporary treatment programs use a risk-adapted approach in which patients receive multiagent chemotherapy with or without low-dose involved-field radiation therapy. Prognostic factors used in determining chemotherapy intensity include stage, presence or absence of B symptoms (fever, weight loss, and night sweats), and/or bulky disease.
Hodgkin lymphoma comprises 6% of childhood cancers. In the United States, the incidence of Hodgkin lymphoma is age-related and is highest among adolescents aged 15 to 19 years (29 cases per million per year), with children ages 10 to 14 years, 5 to 9 years, and 0 to 4 years having approximately threefold, eightfold, and 30-fold lower rates, respectively. In non-European Union countries, there is a similar rate in young adults but a much higher incidence in childhood.
Hodgkin lymphoma has the following unique epidemiological features:
Epstein-Barr virus and Hodgkin lymphoma
Epstein-Barr virus (EBV) has been implicated in the causation of Hodgkin lymphoma. A large proportion of patients with Hodgkin lymphoma have high EBV titers, suggesting that an enhanced activation of EBV may precede the development of Hodgkin lymphoma in some patients. EBV genetic material can be detected in Reed-Sternberg cells from some patients with Hodgkin lymphoma.
The incidence of EBV-associated Hodgkin lymphoma also shows the following distinct epidemiological features:
EBV serologic status is not a prognostic factor for failure-free survival in pediatric and young adult Hodgkin lymphoma patients.[12,15,16,17,19] Patients with a prior history of serologically confirmed infectious mononucleosis have a fourfold increased risk of developing EBV-positive Hodgkin lymphoma; these patients are not at increased risk for EBV-negative Hodgkin lymphoma.
Immunodeficiency and Hodgkin lymphoma
Among individuals with immunodeficiency, the risk of Hodgkin lymphoma is increased, although not as high as the risk of non-Hodgkin lymphoma.
Characteristics of Hodgkin lymphoma presenting in the context of immunodeficiency are as follows:
The following presenting features of Hodgkin lymphoma result from direct or indirect effects of nodal or extranodal involvement and/or constitutional symptoms related to cytokine release from Reed-Sternberg cells.
As the treatment of Hodgkin lymphoma has improved, factors that are associated with outcome have become more difficult to identify. Several factors, however, continue to influence the success and choice of therapy. These factors are interrelated in the sense that disease stage, bulk, and biologic aggressiveness are frequently codependent. Further complicating the identification of prognostic factors is their use in determining the aggressiveness of therapy. For example, in a report from the German-Austrian Pediatric multicenter trial DAL-HD-90, bulky disease was not a prognostic factor for outcome on multivariate analysis. However, in this study, boost irradiation doses were given to patients who had postchemotherapy residual disease, which could have obfuscated the relevance of bulky disease at presentation. This underscores the complexity in determining prognostic factors.
Pretreatment factors associated with an adverse outcome in one or more studies include the following:
Prognostic factors identified in selected multi-institutional studies include the following:
The rapidity of response to initial cycles of chemotherapy also appears to be prognostically important and is being used in the research setting to determine subsequent therapy.[30,31,33] Positron emission tomography (PET) scanning is being evaluated as a method to assess early response in pediatric Hodgkin lymphoma. Fluorodeoxyglucose-PET avidity after two cycles of chemotherapy for Hodgkin lymphoma in adults has been shown to predict treatment failure and progression-free survival.[35,36,37] Further studies in children are required to assess the role of early response based on PET. The value of PET avidity to predict outcome and whether improved outcome can be achieved by altering the therapeutic strategy based on early PET response is to be determined.
Although prognostic factors will continue to change because of risk stratification and choice of therapy, parameters such as disease stage, bulk, systemic symptomatology, and early response to chemotherapy are likely to remain relevant to outcome.
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|34.||Ilivitzki A, Radan L, Ben-Arush M, et al.: Early interim FDG PET/CT prediction of treatment response and prognosis in pediatric Hodgkin disease-added value of low-dose CT. Pediatr Radiol 43 (1): 86-92, 2013.|
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|37.||Dann EJ, Bar-Shalom R, Tamir A, et al.: Risk-adapted BEACOPP regimen can reduce the cumulative dose of chemotherapy for standard and high-risk Hodgkin lymphoma with no impairment of outcome. Blood 109 (3): 905-9, 2007.|
Hodgkin lymphoma is characterized by a variable number of characteristic multinucleated giant cells (Reed-Sternberg cells) or large mononuclear cell variants (lymphocytic and histiocytic cells) in a background of inflammatory cells consisting of small lymphocytes, histiocytes, epithelioid histiocytes, neutrophils, eosinophils, plasma cells, and fibroblasts. The inflammatory cells are present in different proportions depending on the histologic subtype. It has been conclusively shown that Reed-Sternberg cells and/or lymphocytic and histiocytic cells represent a clonal population. Almost all cases of Hodgkin lymphoma arise from germinal center B cells that cannot synthesize immunoglobulin.[1,2] The histologic features and clinical symptoms of Hodgkin lymphoma have been attributed to the numerous cytokines, chemokines, and products of the tumor necrosis factor receptors (TNF-R) family secreted by the Reed-Sternberg cells.
The hallmark of classic Hodgkin lymphoma is the Reed-Sternberg cell, which has the following features:
Classical Hodgkin Lymphoma
Classical Hodgkin lymphoma is divided into the following four subtypes:
These subtypes are defined according to the number of Reed-Sternberg cells, characteristics of the inflammatory milieu, and the presence or absence of fibrosis.
Characteristics of the histological subtypes of classical Hodgkin lymphoma include the following:
A study of over 600 patients with nodular sclerosis Hodgkin lymphoma from three different university hospitals in the United States showed that two haplotypes in the HLA class II region were identified, which correlated with 70% increased risk of developing nodular sclerosis Hodgkin lymphoma. Another haplotype was associated with a 60% decreased risk. It is hypothesized that these haplotypes result in atypical immune responses that lead to Hodgkin lymphoma.
Nodular Lymphocyte-Predominant Hodgkin Lymphoma
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|18.||Boudová L, Torlakovic E, Delabie J, et al.: Nodular lymphocyte-predominant Hodgkin lymphoma with nodules resembling T-cell/histiocyte-rich B-cell lymphoma: differential diagnosis between nodular lymphocyte-predominant Hodgkin lymphoma and T-cell/histiocyte-rich B-cell lymphoma. Blood 102 (10): 3753-8, 2003.|
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|22.||Appel BE, Chen L, Buxton A, et al.: Impact of low-dose involved-field radiation therapy on pediatric patients with lymphocyte-predominant Hodgkin lymphoma treated with chemotherapy: a report from the Children's Oncology Group. Pediatr Blood Cancer 59 (7): 1284-9, 2012.|
Staging and evaluation of disease status is undertaken at diagnosis and performed again early in the course of chemotherapy and at the end of chemotherapy.
The following three specific constitutional symptoms (B symptoms) correlate with prognosis and are considered in assignment of stage:
Additional Hodgkin-associated constitutional symptoms without prognostic significance include the following:
Anatomic information from CT is complemented by PET functional imaging, which is sensitive in determining initial sites of involvement, particularly sites too small to be considered abnormal by CT criteria.
Definition of bulky disease
The posteroanterior chest radiograph remains important since the criterion for bulky mediastinal lymphadenopathy used in North American protocols is defined by the ratio of the diameter of the mediastinal lymph node mass to the maximal diameter of the rib cage on an upright chest radiograph; a ratio of 33% or higher is considered bulky. This definition is no longer used in some European protocols because it does not influence risk classification.
The criteria for bulky peripheral (nonmediastinal) lymphadenopathy have varied per cooperative group study protocols from aggregate nodal masses exceeding 4 to 6 cm. This disease characteristic has not been consistently used among all groups for risk stratification.
Criteria for lymphomatous involvement by CT
Defining strict CT size criteria for the establishment of lymphomatous nodal involvement is complicated by a number of factors, such as overlap between benign reactive hyperplasia and malignant lymphadenopathy and obliquity of node orientation to the scan plane. Additional difficulties more specific to children include greater variability of normal nodal size with body region and age and the frequent occurrence of reactive hyperplasia.
General concepts to consider in regard to defining lymphomatous involvement by CT include the following:
The recommended functional imaging procedure for initial staging is now PET.[5,6] In PET scanning, uptake of the radioactive glucose analog, 18-fluoro-2-deoxyglucose (FDG) correlates with proliferative activity in tumors undergoing anaerobic glycolysis. PET-CT, which integrates functional and anatomic tumor characteristics, is often used for staging and monitoring of pediatric patients with Hodgkin lymphoma. Residual or persistent FDG avidity has been correlated with prognosis and the need for additional therapy in posttreatment evaluation.[7,8,9,10]
General concepts to consider in regard to defining lymphomatous involvement by FDG-PET include the following:
FDG-PET has limitations in the pediatric setting. Tracer avidity may be seen in a variety of nonmalignant conditions including thymic rebound commonly observed after completion of lymphoma therapy. FDG-avidity in normal tissues, for example, brown fat of cervical musculature, may confound interpretation of the presence of nodal involvement by lymphoma.
Establishing the Diagnosis of Hodgkin Lymphoma
After a careful physiologic and radiographic evaluation of the patient, the least invasive procedure should be used to establish the diagnosis of lymphoma.
Key issues to consider in choosing the diagnostic approach include the following:
Ann Arbor Staging Classification for Hodgkin Lymphoma
Stage is determined by anatomic evidence of disease using CT scanning in conjunction with functional imaging. The staging classification used for Hodgkin lymphoma was adopted at the Ann Arbor Conference held in 1971  and revised in 1989. Staging is independent of the imaging modality used.
|a Reprinted with permission from AJCC: Hodgkin and non-Hodgkin lymphomas. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 607-11.|
|I||Involvement of a single lymphatic site (i.e., nodal region, Waldeyer's ring, thymus, or spleen) (I); or localized involvement of a single extralymphatic organ or site in the absence of any lymph node involvement (IE).|
|II||Involvement of two or more lymph node regions on the same side of the diaphragm (II); or localized involvement of a single extralymphatic organ or site in association with regional lymph node involvement with or without involvement of other lymph node regions on the same side of the diaphragm (IIE).|
|III||Involvement of lymph node regions on both sides of the diaphragm (III), which also may be accompanied by extralymphatic extension in association with adjacent lymph node involvement (IIIE) or by involvement of the spleen (IIIS) or both (IIIE,S).|
|IV||Diffuse or disseminated involvement of one or more extralymphatic organs, with or without associated lymph node involvement; or isolated extralymphatic organ involvement in the absence of adjacent regional lymph node involvement, but in conjunction with disease in distant site(s). Stage IV includes any involvement of the liver or bone marrow, lungs (other than by direct extension from another site), or cerebrospinal fluid.|
|Designations applicable to any stage|
|B||Fever (temperature >38ºC), drenching night sweats, unexplained loss of >10% of body weight within the preceding 6 months.|
|E||Involvement of a single extranodal site that is contiguous or proximal to the known nodal site.|
Extralymphatic disease resulting from direct extension of an involved lymph node region is designated E. Extralymphatic disease can cause confusion in staging. For example, the designation E is not appropriate for cases of widespread disease or diffuse extralymphatic disease (e.g., large pleural effusion that is cytologically positive for Hodgkin lymphoma), which should be considered stage IV. If pathologic proof of noncontiguous involvement of one or more extralymphatic sites has been documented, the symbol for the site of involvement, followed by a plus sign (+), is listed. Current practice is to assign a clinical stage on the basis of findings of the clinical evaluation; however, pathologic confirmation of noncontiguous extralymphatic involvement is strongly suggested for assignment to stage IV.
After the diagnostic and staging evaluation data are acquired, patients are further classified into risk groups for the purposes of treatment planning. The classification of patients into low-, intermediate-, or high-risk categories varies considerably among the various pediatric research groups, and often even between different studies conducted by the same group, as summarized in Table 2.
|Trial||Low Risk||Intermediate Risk||High Risk|
|E = extralymphatic.|
|a Adapted from Kelly.|
|Children's Oncology Group|
|AHOD0031||IA bulk or E; IB; IIA bulk or E; IIB; IIIA, IVA|
|AHOD0431||IA, IIA with no bulk|
|C5942||IA, IB, IIA with no bulk, no hilar nodes and <4 sites||IA, IB, IIA with bulk, hilar nodes or ≥4 sites; III||IV|
|C59704||IIB/IIIB with bulk, IV|
|P9425/P9426||IA, IIA with no bulk||IB, IIA, IIIA1 with bulk; IIIA2||IIB, IIIB, IV|
|GPOH-HD 95; GPOH-HD 2002;PHL-C1[4,25,26]||1A/B, IIA||IE A/B;IIE A; IIB; IIIA||IIE B; IIIE A/B; IIIB; IV|
|Stanford/St. Jude/Dana-Farber Cancer Institute Consortium|
|HOD05||IB, IIIA, IA/IIA with E, ≥3 sites or bulk|
|HOD08||IA, IIA with no bulk, E and <3 sites|
|HOD99||IIB, IIIB, IV|
Although all major research groups classify patients according to clinical criteria, such as stage and presence of B symptoms, extranodal involvement, or bulky disease, comparison of outcomes across trials is further complicated because of differences in how these individual criteria are defined.
Further refinement of risk classification may be performed through assessment of response after initial cycles of chemotherapy or at its completion.
Interim response assessment
The interim response to initial therapy, which may be assessed on the basis of volume reduction of disease, functional imaging status, or both, is an important prognostic variable in both early- and advanced-stage pediatric Hodgkin lymphoma.[27,28] Definitions for interim response are variable and protocol specific, but can range from volume reductions of greater than 50% to the achievement of a complete response with a volume reduction of greater than 95% by anatomic imaging or resolution of FDG-PET avidity.[4,21,24]
The rapidity of response to early therapy has been used in risk stratification to tailor therapy in an effort to augment therapy in higher-risk patients or to reduce the late effects while maintaining efficacy.
Results of selected trials using interim response to titrate therapy
End of chemotherapy response assessment
Restaging is carried out upon the completion of all planned initial chemotherapy and may be used to determine the need for consolidative radiation therapy. Key concepts to consider include the following:
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|4.||Mauz-Körholz C, Hasenclever D, Dörffel W, et al.: Procarbazine-free OEPA-COPDAC chemotherapy in boys and standard OPPA-COPP in girls have comparable effectiveness in pediatric Hodgkin's lymphoma: the GPOH-HD-2002 study. J Clin Oncol 28 (23): 3680-6, 2010.|
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|7.||Naumann R, Vaic A, Beuthien-Baumann B, et al.: Prognostic value of positron emission tomography in the evaluation of post-treatment residual mass in patients with Hodgkin's disease and non-Hodgkin's lymphoma. Br J Haematol 115 (4): 793-800, 2001.|
|8.||Hutchings M, Loft A, Hansen M, et al.: FDG-PET after two cycles of chemotherapy predicts treatment failure and progression-free survival in Hodgkin lymphoma. Blood 107 (1): 52-9, 2006.|
|9.||Lopci E, Burnelli R, Guerra L, et al.: Postchemotherapy PET evaluation correlates with patient outcome in paediatric Hodgkin's disease. Eur J Nucl Med Mol Imaging 38 (9): 1620-7, 2011.|
|10.||Sucak GT, Özkurt ZN, Suyani E, et al.: Early post-transplantation positron emission tomography in patients with Hodgkin lymphoma is an independent prognostic factor with an impact on overall survival. Ann Hematol 90 (11): 1329-36, 2011.|
|11.||Robertson VL, Anderson CS, Keller FG, et al.: Role of FDG-PET in the definition of involved-field radiation therapy and management for pediatric Hodgkin's lymphoma. Int J Radiat Oncol Biol Phys 80 (2): 324-32, 2011.|
|12.||Agrawal K, Mittal BR, Bansal D, et al.: Role of F-18 FDG PET/CT in assessing bone marrow involvement in pediatric Hodgkin's lymphoma. Ann Nucl Med 27 (2): 146-51, 2013.|
|13.||Cheng G, Servaes S, Zhuang H: Value of (18)F-fluoro-2-deoxy-D-glucose positron emission tomography/computed tomography scan versus diagnostic contrast computed tomography in initial staging of pediatric patients with lymphoma. Leuk Lymphoma 54 (4): 737-42, 2013.|
|14.||Anghelescu DL, Burgoyne LL, Liu T, et al.: Clinical and diagnostic imaging findings predict anesthetic complications in children presenting with malignant mediastinal masses. Paediatr Anaesth 17 (11): 1090-8, 2007.|
|15.||Simpson CD, Gao J, Fernandez CV, et al.: Routine bone marrow examination in the initial evaluation of paediatric Hodgkin lymphoma: the Canadian perspective. Br J Haematol 141 (6): 820-6, 2008.|
|16.||Carbone PP, Kaplan HS, Musshoff K, et al.: Report of the Committee on Hodgkin's Disease Staging Classification. Cancer Res 31 (11): 1860-1, 1971.|
|17.||Lister TA, Crowther D, Sutcliffe SB, et al.: Report of a committee convened to discuss the evaluation and staging of patients with Hodgkin's disease: Cotswolds meeting. J Clin Oncol 7 (11): 1630-6, 1989.|
|18.||Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010.|
|19.||Kelly KM: Management of children with high-risk Hodgkin lymphoma. Br J Haematol 157 (1): 3-13, 2012.|
|20.||Friedman DI, Wolden S, Constine L, et al.: AHOD0031: A phase III study of dose intensive therapy for intermediate risk Hodgkin lymphoma: a report from the Children's Oncology Group. [Abstract] Blood 116 (22): A-766, 2010.|
|21.||Keller FG, Nachman J, Constine L: A phase III study for the treatment of children and adolescents with newly diagnosed low risk Hodgkin lymphoma (HL). [Abstract] Blood 116 (21): A-767, 2010.|
|22.||Nachman JB, Sposto R, Herzog P, et al.: Randomized comparison of low-dose involved-field radiotherapy and no radiotherapy for children with Hodgkin's disease who achieve a complete response to chemotherapy. J Clin Oncol 20 (18): 3765-71, 2002.|
|23.||Kelly KM, Sposto R, Hutchinson R, et al.: BEACOPP chemotherapy is a highly effective regimen in children and adolescents with high-risk Hodgkin lymphoma: a report from the Children's Oncology Group. Blood 117 (9): 2596-603, 2011.|
|24.||Schwartz CL, Constine LS, Villaluna D, et al.: A risk-adapted, response-based approach using ABVE-PC for children and adolescents with intermediate- and high-risk Hodgkin lymphoma: the results of P9425. Blood 114 (10): 2051-9, 2009.|
|25.||Schellong G, Pötter R, Brämswig J, et al.: High cure rates and reduced long-term toxicity in pediatric Hodgkin's disease: the German-Austrian multicenter trial DAL-HD-90. The German-Austrian Pediatric Hodgkin's Disease Study Group. J Clin Oncol 17 (12): 3736-44, 1999.|
|26.||Dörffel W, Lüders H, Rühl U, et al.: Preliminary results of the multicenter trial GPOH-HD 95 for the treatment of Hodgkin's disease in children and adolescents: analysis and outlook. Klin Padiatr 215 (3): 139-45, 2003 May-Jun.|
|27.||Kung FH, Schwartz CL, Ferree CR, et al.: POG 8625: a randomized trial comparing chemotherapy with chemoradiotherapy for children and adolescents with Stages I, IIA, IIIA1 Hodgkin Disease: a report from the Children's Oncology Group. J Pediatr Hematol Oncol 28 (6): 362-8, 2006.|
|28.||Weiner MA, Leventhal B, Brecher ML, et al.: Randomized study of intensive MOPP-ABVD with or without low-dose total-nodal radiation therapy in the treatment of stages IIB, IIIA2, IIIB, and IV Hodgkin's disease in pediatric patients: a Pediatric Oncology Group study. J Clin Oncol 15 (8): 2769-79, 1997.|
|29.||Molnar Z, Simon Z, Borbenyi Z, et al.: Prognostic value of FDG-PET in Hodgkin lymphoma for posttreatment evaluation. Long term follow-up results. Neoplasma 57 (4): 349-54, 2010.|
|30.||Cheson BD, Pfistner B, Juweid ME, et al.: Revised response criteria for malignant lymphoma. J Clin Oncol 25 (5): 579-86, 2007.|
|31.||Brepoels L, Stroobants S, De Wever W, et al.: Hodgkin lymphoma: Response assessment by revised International Workshop Criteria. Leuk Lymphoma 48 (8): 1539-47, 2007.|
|32.||Juweid ME, Stroobants S, Hoekstra OS, et al.: Use of positron emission tomography for response assessment of lymphoma: consensus of the Imaging Subcommittee of International Harmonization Project in Lymphoma. J Clin Oncol 25 (5): 571-8, 2007.|
|33.||Cheson BD: The International Harmonization Project for response criteria in lymphoma clinical trials. Hematol Oncol Clin North Am 21 (5): 841-54, 2007.|
|34.||Voss SD, Chen L, Constine LS, et al.: Surveillance computed tomography imaging and detection of relapse in intermediate- and advanced-stage pediatric Hodgkin's lymphoma: a report from the Children's Oncology Group. J Clin Oncol 30 (21): 2635-40, 2012.|
|35.||Rathore N, Eissa HM, Margolin JF, et al.: Pediatric Hodgkin lymphoma: are we over-scanning our patients? Pediatr Hematol Oncol 29 (5): 415-23, 2012.|
|36.||Hartridge-Lambert SK, Schöder H, Lim RC, et al.: ABVD alone and a PET scan complete remission negates the need for radiologic surveillance in early-stage, nonbulky Hodgkin lymphoma. Cancer 119 (6): 1203-9, 2013.|
|37.||Friedmann AM, Wolfson JA, Hudson MM, et al.: Relapse after treatment of pediatric Hodgkin lymphoma: outcome and role of surveillance after end of therapy. Pediatr Blood Cancer 60 (9): 1458-63, 2013.|
|38.||Nasr A, Stulberg J, Weitzman S, et al.: Assessment of residual posttreatment masses in Hodgkin's disease and the need for biopsy in children. J Pediatr Surg 41 (5): 972-4, 2006.|
|39.||Levine JM, Weiner M, Kelly KM: Routine use of PET scans after completion of therapy in pediatric Hodgkin disease results in a high false positive rate. J Pediatr Hematol Oncol 28 (11): 711-4, 2006.|
|40.||Rhodes MM, Delbeke D, Whitlock JA, et al.: Utility of FDG-PET/CT in follow-up of children treated for Hodgkin and non-Hodgkin lymphoma. J Pediatr Hematol Oncol 28 (5): 300-6, 2006.|
|41.||Meany HJ, Gidvani VK, Minniti CP: Utility of PET scans to predict disease relapse in pediatric patients with Hodgkin lymphoma. Pediatr Blood Cancer 48 (4): 399-402, 2007.|
|42.||Picardi M, De Renzo A, Pane F, et al.: Randomized comparison of consolidation radiation versus observation in bulky Hodgkin's lymphoma with post-chemotherapy negative positron emission tomography scans. Leuk Lymphoma 48 (9): 1721-7, 2007.|
Historical Overview of Treatment for Hodgkin Lymphoma
Long-term survival has been achieved in children and adolescents with Hodgkin lymphoma using radiation, multiagent chemotherapy, and combined-modality therapy. In selected cases of localized lymphocyte-predominant Hodgkin lymphoma, complete surgical resection may be curative and obviate the need for cytotoxic therapy.
Treatment options for children and adolescents with Hodgkin lymphoma include the following:
|1.||Radiation therapy as a single modality. |
|2.||Multiagent chemotherapy as a single modality.|
|3.||Radiation therapy and multiagent chemotherapy as a combined-modality therapy. Considerations for the use of multiagent chemotherapy alone versus combined-modality therapy include the following:|
Contemporary treatment for pediatric Hodgkin lymphoma uses a risk-adapted and response-based paradigm that assigns the length and intensity of therapy based on disease-related factors such as stage, number of involved nodal regions, tumor bulk, the presence of B symptoms, and early response to chemotherapy by functional imaging. Age, gender, and histological subtype may also be considered in treatment planning.
Risk-adapted treatment paradigms
Histology-based therapy (stage I nodular lymphocyte-predominant Hodgkin lymphoma)
Histological subtype may direct therapy in patients with stage I completely resected, nodular lymphocyte-predominant Hodgkin lymphoma, whose initial treatment may be surgery alone.
This treatment approach is supported by the following findings from the literature:
A summary of treatment approaches for nodular lymphocyte-predominant Hodgkin lymphoma can be found in Table 8.
As discussed in the previous sections, most newly diagnosed children will be treated with risk-adapted chemotherapy alone or in combination with consolidative radiation therapy (RT). RT volumes can have variable and protocol-specific definitions, but generally encompass lymph node regions initially involved at the time of diagnosis, without extensive inclusion of uninvolved regions. RT field reductions are made to account for tumor regression with chemotherapy.
With advancements in systemic therapy, RT field definitions have evolved and become increasingly restricted. RT is no longer needed to sterilize all disease. Advancements in radiologic imaging allow more precise radiation target definition. Historically, concerns about the symmetry of growth in young children with unilateral disease involvement often prompted treatment of the contralateral tissues. With contemporary treatments utilizing 15 to 21 Gy, treatment of contralateral uninvolved sites is not necessary in all but perhaps the very young.
General trends in radiation treatment volume are summarized as follows:
|Involved Node(s)||Radiation Field|
|a Adapted from Terezakis et al.|
|b Upper cervical region is not treated if supraclavicular involvement is an extension of the mediastinal disease.|
|c Prechemotherapy volume is treated except for lateral borders of the mediastinal field.|
|Cervical||Neck and/or supraclavicularb /infraclavicular|
|Supraclavicular||Supraclavicular/infraclavicular and lower neck|
|Axilla||Axilla ± supraclavicular/infraclavicular|
|Mediastinum||Mediastinum, hila, and infraclavicular/supraclavicularb,c|
|Spleen||Spleen ± para-aortic|
|Para-aortic||Para-aortic ± spleen|
|Iliac||Iliac, inguinal, femoral|
|Inguinal||External iliac, inguinal, femoral|
|Femoral||External iliac, inguinal, femoral|
A breast-sparing radiation-therapy plan using proton therapy is being evaluated to determine if there is a statistically significant reduction in dose. Long-term results are awaited.
Considerations in IFRT Treatment Planning
Traditional definitions of lymph node regions can be helpful for defining IFRT but may not be sufficient. The following issues should be considered in IFRT treatment planning:
The dose of radiation is also variously defined and often protocol specific. General considerations regarding radiation dose include the following:
Technical considerations for the use of radiation therapy to treat Hodgkin lymphoma include the following:
Role of LD-IFRT in childhood and adolescent Hodgkin lymphoma
Because all children and adolescents with Hodgkin lymphoma receive chemotherapy, a question commanding significant attention is whether patients who achieve a rapid early response or a CR to chemotherapy require RT. Conversely, the judicious use of LD-IFRT may permit a reduction in the intensity or duration of chemotherapy below toxicity thresholds that would not be possible if single modality chemotherapy were used, thus decreasing overall acute and late toxicities.
Key points to consider in regard to the role of radiation in pediatric Hodgkin lymphoma include the following:
Additionally, when considering the role of RT in the initial management of Hodgkin lymphoma, one must carefully consider the endpoint that is being evaluated. Unlike most other pediatric malignancies, Hodgkin lymphoma is often salvageable if initial treatment does not result in a CR or if relapse occurs. For example, studies comparing combination chemotherapy with or without RT in adults with advanced-stage Hodgkin lymphoma showed that EFS was higher for patients who received initial chemotherapy and RT; however, OS was no different for patients whose initial therapy was chemotherapy alone. Among adult Hodgkin lymphoma patients, study results conflict regarding whether adjuvant RT improves OS compared with chemotherapy alone, despite an improvement in EFS, because of the ability to effectively salvage patients who relapse after initial therapy. Thus, it is not clear whether EFS or OS should be the appropriate endpoint for a trial comparing chemotherapy with or without radiation.
Finally, an inherent assumption is made in a trial comparing chemotherapy alone versus chemotherapy and radiation that the effect of radiation on EFS will be uniform across all patient subgroups. However, it is not clear how histology, presence of bulky disease, presence of B symptoms, or other variables affect the efficacy of postchemotherapy radiation.
All of the agents in original MOPP and ABVD regimens continue to be used in contemporary pediatric treatment regimens. COPP (substituting cyclophosphamide for mechlorethamine) has almost uniformly replaced MOPP as the preferred alkylator regimen in most frontline trials. Etoposide has been incorporated into treatment regimens as an effective alternative to alkylating agents in an effort to reduce gonadal toxicity and enhance antineoplastic activity.
Combination chemotherapy regimens used in contemporary trials are summarized in Table 4.
|IV = intravenous; PO = oral.|
|COPP ||Cyclophosphamide||600 mg/m2||IV||1, 8|
|Vincristine (Oncovin)||1.4 mg/m2||IV||1, 8|
|COPDAC||Dacarbazine substituted for procarbazine in COPP||250 mg/m2||IV||1–3|
|OPPA||Vincristine (Oncovin)||1.5 mg/m2||IV||1, 8, 15|
|Doxorubicin (Adriamycin)||40 mg/m2||IV||1, 15|
|OEPA||Vincristine (Oncovin)||1.5 mg/m2||IV||1, 8, 15|
|Doxorubicin (Adriamycin)||40 mg/m2||IV||1, 15|
|ABVD||Doxorubicin (Adriamycin)||25 mg/m2||IV||1, 15|
|Bleomycin||10 U/m2||IV||1, 15|
|Vinblastine||6 mg/m2||IV||1, 15|
|Dacarbazine||375 mg/m2||IV||1, 15|
|Vincristine (Oncovin)||1.4 mg/m2||IV||0|
|Doxorubicin (Adriamycin)||35 mg/m2||IV||7|
|VAMP||Vinblastine||6 mg/m2||IV||1, 15|
|Doxorubicin (Adriamycin)||25 mg/m2||IV||1, 15|
|Methotrexate||20 mg/m2||IV||1, 15|
|DBVE[43,44]||Doxorubicin||25 mg/m2||IV||1, 15|
|Bleomycin||10 U/m2||IV||1, 15|
|Vincristine (Oncovin)||1.5 mg/m2||IV||1, 15|
|ABVE-PC||Doxorubicin (Adriamycin)||30 mg/m2||IV||0, 1|
|Bleomycin||10 U/m2||IV||0, 7|
|Vincristine (Oncovin)||1.4 mg/m2||IV||0, 7|
|Doxorubicin (Adriamycin)||35 mg/m2||IV||0|
|Cyclophosphamide||1200 mg/m2||IV||1, 8|
|Vincristine (Oncovin)||2 mg/m2||IV||7|
|Vinblastine||6 mg/m2||IV||1, 8|
Results from Selected Clinical Trials
North American cooperative and consortium trials
The Pediatric Oncology Group organized two trials featuring response-based, risk-adapted therapy utilizing ABVE (doxorubicin [Adriamycin], bleomycin, vincristine, and etoposide)  for favorable low-stage patients and dose-dense ABVE-PC (prednisone and cyclophosphamide) for unfavorable advanced-stage patients in combination with 21 Gy IFRT.
Key findings from these trials include the following:
The Children's Cancer Group (CCG) undertook a randomized controlled trial comparing survival outcomes in children treated with risk-adapted COPP/ABV hybrid chemotherapy alone with those treated with COPP/ABV hybrid chemotherapy plus LD-IFRT. The study was closed early because of a significantly higher number of relapses among patients treated with chemotherapy alone. Long-term results include the following:[14,17]
Another CCG Study (COG-59704) evaluated response-adapted therapy featuring four cycles of the dose-intensive BEACOPP regimen followed by a gender-tailored consolidation for pediatric patients with stages IIB, IIIB with bulky disease, and IV Hodgkin lymphoma.[Level of evidence: 2Dii] For rapid early responding girls, an additional four courses of COPP/ABV (without IFRT) were given. Rapid early responding boys received two cycles of ABVD followed by IFRT. Slow early responders received four additional courses of BEACOPP and IFRT. Eliminating IFRT from the girl's therapy was intended to reduce the risk of breast cancer. Key findings from this trial include the following:
The Stanford, St. Jude Children's Research Hospital, and Boston Consortium administered a series of risk-adapted trials over the last 20 years. Key findings include the following:
German multicenter trials
In the last 30 years, German investigators have implemented a series of risk-adapted trials evaluating gender-based treatments featuring multiagent chemotherapy with OPPA/COPP and IFRT.
Key findings from these trials include the following:
Accepted Risk-Adapted Treatment Strategies for Newly Diagnosed Children and Adolescents with Hodgkin Lymphoma
Contemporary trials for pediatric Hodgkin lymphoma involve a risk-adapted, response-based treatment approach that titrates the length and intensity of chemotherapy and dose of radiation based on disease-related factors including stage, number of involved nodal regions, tumor bulk, the presence of B symptoms, and early response to chemotherapy as determined by functional imaging. In addition, vulnerability related to age and gender is also considered in treatment planning.
Classical Hodgkin lymphoma low-risk disease
|Chemotherapy (No. of Cycles)a||Radiation (Gy)||Stage||No. of Patients||Event-Free Survival (No. of Years of Follow-up)||Survival (No. of Years of Follow-up)|
|CS = clinical stage; IFRT = involved-field radiation therapy; N/A = not applicable; No. = number.|
|a Refer toTable 4for more information about the chemotherapy regimens.|
|b Without bulky mediastinal (defined as one-third or more of intrathoracic ratio measured on an upright posteroanterior chest radiograph) or peripheral lymphadenopathy (defined as 6 cm or more) or B symptoms.|
|c Without adverse features, defined as one or more of the following: hilar adenopathy, involvement of more than four nodal regions; mediastinal tumor with diameter equal to or larger than one-third of the chest diameter, and node or nodal aggregate with a diameter larger than 10 cm.|
|d Results fromas-treated analysis.|
|VAMP (4)||IFRT (15–25.5)||CS I/IIb||110||89% (10)||96% (10)|
|VAMP (4)||IFRT (25.5)||CS I/IIb||41||88% (5)||100% (5)|
|COPP/ABV (4)[14,17]||IFRT (21)||CS IA/B, IIAc||94||100% (10)d||97% (10)d|
|None||113||89% (10)d||96% (10)d|
|OEPA/OPPA (2)||IFRT (20–35)||I, IIA||281||94% (5)||N/A|
|ABVE (2-4)||IFRT (25.5)||IA, IIA, IIIA1||51||91% (6)||98% (6)|
Classical Hodgkin lymphoma intermediate-risk disease
|Chemotherapy (No. of Cycles)a||Radiation (Gy)||Stage||No. of Patients||Event-Free Survival (No. of Years of Follow-up)||Survival (No. of Years of Follow-up)|
|CS = clinical stage; E = extralymphatic; IFRT = involved-field radiation therapy; N/A = not applicable.|
|a Refer toTable 4for more information about the chemotherapy regimens.|
|b With adverse disease features, defined as one or more of the following: hilar adenopathy, involvement of more than four nodal regions; mediastinal tumor with diameter equal to or larger than one-third of the chest diameter, and node or nodal aggregate with a diameter larger than 10 cm.|
|c Results fromas-treated analysis.|
|COPP/ABV (6)||IFRT (21)||CS I/IIb, CS IIB, CS III||103||84% (10)c||100% (3)|
|OEPA/OPPA (2) + COPP (2)||IFRT (20–35)||IIE A, IIB, IIIA||212||92% (5)||N/A|
|OEPA/OPPA (2) + COPDAC (2)||IFRT (20–35)||IE, IIB, IIE A, IIIA||139||88.3% (5)||98.5% (5)|
|ABVE-PC (3–5)||IFRT (21)||IB, IIA, IIIA||53||84% (5)||95% (5)|
Classical Hodgkin lymphoma high-risk disease
|Chemotherapy (No. of Cycles)a||Radiation (Gy)||Stage||No. of Patients||Event-Free Survival (No. of Years of Follow-up)||Survival (No. of Years of Follow-up)|
|E = extralymphatic; IFRT = involved-field radiation therapy; N/A = not applicable; No. = number; RER = rapid early response; SER = slow early response.|
|a Refer toTable 4for more information about the chemotherapy regimens.|
|OEPA/OPPA (2) + COPP (4)||IFRT (20–35)||IIE B, IIIE A/B, IIIB, IVA/B||265||91% (5)||N/A|
|OEPA/OPPA (2) + COPDAC (4)||IFRT (20–35)||IIE B, IIIE A/B, IIIB, IVA/B||239||86.9% (5)||94.9% (5)|
|ABVE-PC (3-5)||IFRT (21)||IB, IIA, IIIA||163||85% (5)||95% (5)|
|BEACOPP (4); COPP/ABV (4) (RER; girls)||None||IIB, IIIB, IV||38||94% (5)||97% (5)|
|BEACOPP (4); ABVD (2) (RER; boys)||IFRT (21)||IIB, IIIB, IV||34|
|BEACOPP (8) (SER)||IFRT (21)||IIB, IIIB, IV||25|
Nodular lymphocyte-predominant Hodgkin lymphoma
The use of combination chemotherapy and/or radiation therapy can achieve excellent long-term progression-free survival and OS in patients with nodular lymphocyte-predominant Hodgkin lymphoma.[23,53,54] Late recurrences have been reported and are typically responsive to re-treatment. Because deaths observed among individuals with this histological subtype are more frequently related to complications from cytotoxic therapy, risk-adapted treatment assignment is particularly important for limiting exposure to agents with established dose-related toxicities.[53,54]Table 8 summarizes the results of contemporary treatment approaches used for nodular lymphocyte-predominant Hodgkin lymphoma, some of which feature surgery alone for completely resected disease and limited cycles of chemotherapy with or without low-dose IFRT. Because of the relative rarity of this subtype, most trials are limited by small cohort numbers and nonrandom allocation of treatment.
|Chemotherapy (No. of Cycles)a||Radiation (Gy)||No. of Patients||Event-Free Survival (No. of Years of Follow-up)||Survival (No. of Years of Follow-up)|
|IFRT = involved-field radiation therapy; N/A = not applicable; No. = number.|
|a Refer toTable 4for more information about the chemotherapy regimens.|
|b Allocation to radiation therapy or no radiation therapy based on response to therapy.|
|c Allocation based on clinical response.|
|d All involved lymph nodes surgically resected.|
|COPP/ABV (4)b||None||52||96% (5)||100% (5)|
|IFRT (21)||29||100% (5)|
|CVP (3)||None||55||74% (5)||100% (5)|
|VAMP (4)c||None||26||87.5% (5)||N/A|
|VAMP (4)||IFRT (15–25.5)||33||100% (10)||100% (10)|
|Noned||None||51||67% (2)||100% (2)|
|DBVE (2–4)c||None||26||94% (8)||100% (8)|
Treatment of Adolescents and Young Adults with Hodgkin Lymphoma
The treatment approach used for adolescents and young adults with Hodgkin lymphoma may vary based on community referral patterns and age restrictions at pediatric cancer centers. In patients with high-risk disease, the standard of care in medical oncology practices typically involves at least six cycles of ABVD chemotherapy that would deliver a cumulative anthracycline dose of 300 mg/m2.[55,56] In late-health outcomes studies of pediatric cancer survivors, the risk of anthracycline cardiomyopathy has been shown to exponentially increase after exposure to cumulative anthracycline doses of 250 mg/m2 to 300 mg/m2.[57,58] Subsequent need for mediastinal radiation can further enhance the risk of a variety of late cardiac events.[57,58,59] In an effort to optimize disease control and preserve both cardiac and gonadal function, pediatric regimens for low-risk disease most often feature a restricted number of cycles of ABVD or derivative combinations, whereas alkylating agents and etoposide are integrated into anthracycline-containing regimens for those with intermediate- and high-risk disease.
Participation in a clinical trial should be considered for adolescent and young adult patients with Hodgkin lymphoma. Information about ongoing clinical trials is available from the NCI Web site.
Current Clinical Trials
Check for U.S. clinical trials from NCI's list of cancer clinical trials that are now accepting patients with stage I childhood Hodgkin lymphoma, stage II childhood Hodgkin lymphoma, stage III childhood Hodgkin lymphoma and stage IV childhood Hodgkin lymphoma. The list of clinical trials can be further narrowed by location, drug, intervention, and other criteria.
General information about clinical trials is also available from the NCI Web site.
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|21.||Mauz-Körholz C, Gorde-Grosjean S, Hasenclever D, et al.: Resection alone in 58 children with limited stage, lymphocyte-predominant Hodgkin lymphoma-experience from the European network group on pediatric Hodgkin lymphoma. Cancer 110 (1): 179-85, 2007.|
|22.||Pellegrino B, Terrier-Lacombe MJ, Oberlin O, et al.: Lymphocyte-predominant Hodgkin's lymphoma in children: therapeutic abstention after initial lymph node resection--a Study of the French Society of Pediatric Oncology. J Clin Oncol 21 (15): 2948-52, 2003.|
|23.||Appel BE, Chen L, Buxton A, et al.: Impact of low-dose involved-field radiation therapy on pediatric patients with lymphocyte-predominant Hodgkin lymphoma treated with chemotherapy: a report from the Children's Oncology Group. Pediatr Blood Cancer 59 (7): 1284-9, 2012.|
|24.||Diehl V, Sextro M, Franklin J, et al.: Clinical presentation, course, and prognostic factors in lymphocyte-predominant Hodgkin's disease and lymphocyte-rich classical Hodgkin's disease: report from the European Task Force on Lymphoma Project on Lymphocyte-Predominant Hodgkin's Disease. J Clin Oncol 17 (3): 776-83, 1999.|
|25.||Sandoval C, Venkateswaran L, Billups C, et al.: Lymphocyte-predominant Hodgkin disease in children. J Pediatr Hematol Oncol 24 (4): 269-73, 2002.|
|26.||Shankar A, Daw S: Nodular lymphocyte predominant Hodgkin lymphoma in children and adolescents--a comprehensive review of biology, clinical course and treatment options. Br J Haematol 159 (3): 288-98, 2012.|
|27.||Yahalom J, Mauch P: The involved field is back: issues in delineating the radiation field in Hodgkin's disease. Ann Oncol 13 (Suppl 1): 79-83, 2002.|
|28.||Girinsky T, van der Maazen R, Specht L, et al.: Involved-node radiotherapy (INRT) in patients with early Hodgkin lymphoma: concepts and guidelines. Radiother Oncol 79 (3): 270-7, 2006.|
|29.||Campbell BA, Voss N, Pickles T, et al.: Involved-nodal radiation therapy as a component of combination therapy for limited-stage Hodgkin's lymphoma: a question of field size. J Clin Oncol 26 (32): 5170-4, 2008.|
|30.||Maraldo MV, Aznar MC, Vogelius IR, et al.: Involved node radiation therapy: an effective alternative in early-stage hodgkin lymphoma. Int J Radiat Oncol Biol Phys 85 (4): 1057-65, 2013.|
|31.||Terezakis SA, Hudson MM, Constine LS: Hodgkin lymphoma. In: Halperin EC, Constine LS, Tarbell NJ, et al.: Pediatric Radiation Oncology. 5th ed. Philadelphia, Pa: Lippincott Williams & Wilkins, 2011, pp 137-165.|
|32.||Andolino DL, Hoene T, Xiao L, et al.: Dosimetric comparison of involved-field three-dimensional conformal photon radiotherapy and breast-sparing proton therapy for the treatment of Hodgkin's lymphoma in female pediatric patients. Int J Radiat Oncol Biol Phys 81 (4): e667-71, 2011.|
|33.||Rühl U, Albrecht M, Dieckmann K, et al.: Response-adapted radiotherapy in the treatment of pediatric Hodgkin's disease: an interim report at 5 years of the German GPOH-HD 95 trial. Int J Radiat Oncol Biol Phys 51 (5): 1209-18, 2001.|
|34.||Paulino AC, Margolin J, Dreyer Z, et al.: Impact of PET-CT on involved field radiotherapy design for pediatric Hodgkin lymphoma. Pediatr Blood Cancer 58 (6): 860-4, 2012.|
|35.||Schwartz CL, Constine LS, Villaluna D, et al.: A risk-adapted, response-based approach using ABVE-PC for children and adolescents with intermediate- and high-risk Hodgkin lymphoma: the results of P9425. Blood 114 (10): 2051-9, 2009.|
|36.||Friedman DI, Wolden S, Constine L, et al.: AHOD0031: A phase III study of dose intensive therapy for intermediate risk Hodgkin lymphoma: a report from the Children's Oncology Group. [Abstract] Blood 116 (22): A-766, 2010.|
|37.||Yeh JM, Diller L: Pediatric Hodgkin lymphoma: trade-offs between short- and long-term mortality risks. Blood 120 (11): 2195-202, 2012.|
|38.||Biswas T, Culakova E, Friedberg JW, et al.: Involved field radiation therapy following high dose chemotherapy and autologous stem cell transplant benefits local control and survival in refractory or recurrent Hodgkin lymphoma. Radiother Oncol 103 (3): 367-72, 2012.|
|39.||Loeffler M, Brosteanu O, Hasenclever D, et al.: Meta-analysis of chemotherapy versus combined modality treatment trials in Hodgkin's disease. International Database on Hodgkin's Disease Overview Study Group. J Clin Oncol 16 (3): 818-29, 1998.|
|40.||Herbst C, Rehan FA, Skoetz N, et al.: Chemotherapy alone versus chemotherapy plus radiotherapy for early stage Hodgkin lymphoma. Cochrane Database Syst Rev (2): CD007110, 2011.|
|41.||Mauz-Körholz C, Hasenclever D, Dörffel W, et al.: Procarbazine-free OEPA-COPDAC chemotherapy in boys and standard OPPA-COPP in girls have comparable effectiveness in pediatric Hodgkin's lymphoma: the GPOH-HD-2002 study. J Clin Oncol 28 (23): 3680-6, 2010.|
|42.||Donaldson SS, Link MP, Weinstein HJ, et al.: Final results of a prospective clinical trial with VAMP and low-dose involved-field radiation for children with low-risk Hodgkin's disease. J Clin Oncol 25 (3): 332-7, 2007.|
|43.||Tebbi CK, Mendenhall N, London WB, et al.: Treatment of stage I, IIA, IIIA1 pediatric Hodgkin disease with doxorubicin, bleomycin, vincristine and etoposide (DBVE) and radiation: a Pediatric Oncology Group (POG) study. Pediatr Blood Cancer 46 (2): 198-202, 2006.|
|44.||Tebbi CK, Mendenhall NP, London WB, et al.: Response-dependent and reduced treatment in lower risk Hodgkin lymphoma in children and adolescents, results of P9426: a report from the Children's Oncology Group. Pediatr Blood Cancer 59 (7): 1259-65, 2012.|
|45.||Kelly KM, Sposto R, Hutchinson R, et al.: BEACOPP chemotherapy is a highly effective regimen in children and adolescents with high-risk Hodgkin lymphoma: a report from the Children's Oncology Group. Blood 117 (9): 2596-603, 2011.|
|46.||Shankar A, Hall GW, Gorde-Grosjean S, et al.: Treatment outcome after low intensity chemotherapy [CVP] in children and adolescents with early stage nodular lymphocyte predominant Hodgkin's lymphoma - an Anglo-French collaborative report. Eur J Cancer 48 (11): 1700-6, 2012.|
|47.||Tebbi CK, London WB, Friedman D, et al.: Dexrazoxane-associated risk for acute myeloid leukemia/myelodysplastic syndrome and other secondary malignancies in pediatric Hodgkin's disease. J Clin Oncol 25 (5): 493-500, 2007.|
|48.||Friedmann AM, Hudson MM, Weinstein HJ, et al.: Treatment of unfavorable childhood Hodgkin's disease with VEPA and low-dose, involved-field radiation. J Clin Oncol 20 (14): 3088-94, 2002.|
|49.||Hudson MM, Krasin M, Link MP, et al.: Risk-adapted, combined-modality therapy with VAMP/COP and response-based, involved-field radiation for unfavorable pediatric Hodgkin's disease. J Clin Oncol 22 (22): 4541-50, 2004.|
|50.||Metzger ML, Weinstein HJ, Hudson MM, et al.: Association between radiotherapy vs no radiotherapy based on early response to VAMP chemotherapy and survival among children with favorable-risk Hodgkin lymphoma. JAMA 307 (24): 2609-16, 2012.|
|51.||Schellong G: The balance between cure and late effects in childhood Hodgkin's lymphoma: the experience of the German-Austrian Study-Group since 1978. German-Austrian Pediatric Hodgkin's Disease Study Group. Ann Oncol 7 (Suppl 4): 67-72, 1996.|
|52.||Schellong G, Pötter R, Brämswig J, et al.: High cure rates and reduced long-term toxicity in pediatric Hodgkin's disease: the German-Austrian multicenter trial DAL-HD-90. The German-Austrian Pediatric Hodgkin's Disease Study Group. J Clin Oncol 17 (12): 3736-44, 1999.|
|53.||Chen RC, Chin MS, Ng AK, et al.: Early-stage, lymphocyte-predominant Hodgkin's lymphoma: patient outcomes from a large, single-institution series with long follow-up. J Clin Oncol 28 (1): 136-41, 2010.|
|54.||Jackson C, Sirohi B, Cunningham D, et al.: Lymphocyte-predominant Hodgkin lymphoma--clinical features and treatment outcomes from a 30-year experience. Ann Oncol 21 (10): 2061-8, 2010.|
|55.||Viviani S, Zinzani PL, Rambaldi A, et al.: ABVD versus BEACOPP for Hodgkin's lymphoma when high-dose salvage is planned. N Engl J Med 365 (3): 203-12, 2011.|
|56.||Chisesi T, Bellei M, Luminari S, et al.: Long-term follow-up analysis of HD9601 trial comparing ABVD versus Stanford V versus MOPP/EBV/CAD in patients with newly diagnosed advanced-stage Hodgkin's lymphoma: a study from the Intergruppo Italiano Linfomi. J Clin Oncol 29 (32): 4227-33, 2011.|
|57.||van der Pal HJ, van Dalen EC, van Delden E, et al.: High risk of symptomatic cardiac events in childhood cancer survivors. J Clin Oncol 30 (13): 1429-37, 2012.|
|58.||Blanco JG, Sun CL, Landier W, et al.: Anthracycline-related cardiomyopathy after childhood cancer: role of polymorphisms in carbonyl reductase genes--a report from the Children's Oncology Group. J Clin Oncol 30 (13): 1415-21, 2012.|
|59.||Mulrooney DA, Yeazel MW, Kawashima T, et al.: Cardiac outcomes in a cohort of adult survivors of childhood and adolescent cancer: retrospective analysis of the Childhood Cancer Survivor Study cohort. BMJ 339: b4606, 2009.|
The excellent response to frontline therapy among children and adolescents with Hodgkin lymphoma limits opportunities to evaluate second-line (salvage) therapy. Because of the small number of patients that fail primary therapy, no uniform second-line treatment strategy exists for this patient population. Adverse prognostic factors after relapse include the following:[Level of evidence: 3iiA]
Children with localized favorable (relapse ≥12 months after completing therapy) disease recurrences whose original therapy involved reduced cycles of risk-adapted therapy or with chemotherapy alone and/or low-dose involved-field radiation therapy (LD-IRFT) consolidation have a high likelihood of achieving long-term survival following treatment with more intensive conventional chemotherapy.[5,6]
Key concepts in regard to treatment of refractory/recurrent Hodgkin lymphoma in children and adolescents are as follows:
Agents used alone or in combination regimens in the treatment of refractory/recurrent Hodgkin lymphoma include the following:
Brentuximab vedotin has been evaluated in adults with Hodgkin lymphoma. A phase I study in adults with CD30-positive lymphomas identified a recommended phase II dose of 1.8 mg/kg on an every 3-week schedule and showed an objective response rate of 50% (6 of 12 patients) at the recommended phase II dose.[Level of evidence: 2Div] A phase II trial in adults with Hodgkin lymphoma (N = 102) who relapsed after autologous stem cell transplantation showed a complete remission rate of 32% and a partial remission rate of 40%.[14,15] The number of pediatric patients treated with brentuximab vedotin is not sufficient to determine whether they respond differently than adult patients. There are ongoing trials to determine the toxicity and efficacy of combining brentuximab vedotin with chemotherapy.
Patients treated with HCT may experience relapse as late as 5 years after the procedure; they should be monitored for relapse and late treatment sequelae.
Response Rates for Primary Refractory Hodgkin Lymphoma
Salvage rates for patients with primary refractory Hodgkin lymphoma are poor even with autologous HCT and radiation. However, intensification of therapy followed by HCT consolidation has been reported to achieve long-term survival in some studies.
Treatment Options Under Clinical Evaluation
The following is an example of a national and/or institutional clinical trial that is currently being conducted or is under analysis. Information about ongoing clinical trials is available from the NCI Web site.
|1.||AHOD1221 (NCT01780662) (Brentuximab Vedotin and Gemcitabine Hydrochloride in Treating Younger Patients With Relapsed or Refractory Hodgkin Lymphoma): Both brentuximab vedotin and gemcitabine are active as single agents against Hodgkin lymphoma.[13,15,20,41,42] The objectives of this phase I/II trial include the following:|
Current Clinical Trials
Check for U.S. clinical trials from NCI's list of cancer clinical trials that are now accepting patients with recurrent/refractory childhood Hodgkin lymphoma. The list of clinical trials can be further narrowed by location, drug, intervention, and other criteria.
General information about clinical trials is also available from the NCI Web site.
|1.||Metzger ML, Hudson MM, Krasin MJ, et al.: Initial response to salvage therapy determines prognosis in relapsed pediatric Hodgkin lymphoma patients. Cancer 116 (18): 4376-84, 2010.|
|2.||Moskowitz CH, Nimer SD, Zelenetz AD, et al.: A 2-step comprehensive high-dose chemoradiotherapy second-line program for relapsed and refractory Hodgkin disease: analysis by intent to treat and development of a prognostic model. Blood 97 (3): 616-23, 2001.|
|3.||Schellong G, Dörffel W, Claviez A, et al.: Salvage therapy of progressive and recurrent Hodgkin's disease: results from a multicenter study of the pediatric DAL/GPOH-HD study group. J Clin Oncol 23 (25): 6181-9, 2005.|
|4.||Gorde-Grosjean S, Oberlin O, Leblanc T, et al.: Outcome of children and adolescents with recurrent/refractory classical Hodgkin lymphoma, a study from the Société Française de Lutte contre le Cancer des Enfants et des Adolescents (SFCE). Br J Haematol 158 (5): 649-56, 2012.|
|6.||Rühl U, Albrecht M, Dieckmann K, et al.: Response-adapted radiotherapy in the treatment of pediatric Hodgkin's disease: an interim report at 5 years of the German GPOH-HD 95 trial. Int J Radiat Oncol Biol Phys 51 (5): 1209-18, 2001.|
|7.||Cairo MS, Shen V, Krailo MD, et al.: Prospective randomized trial between two doses of granulocyte colony-stimulating factor after ifosfamide, carboplatin, and etoposide in children with recurrent or refractory solid tumors: a children's cancer group report. J Pediatr Hematol Oncol 23 (1): 30-8, 2001.|
|8.||Bonfante V, Viviani S, Santoro A, et al.: Ifosfamide and vinorelbine: an active regimen for patients with relapsed or refractory Hodgkin's disease. Br J Haematol 103 (2): 533-5, 1998.|
|9.||Cole PD, Schwartz CL, Drachtman RA, et al.: Phase II study of weekly gemcitabine and vinorelbine for children with recurrent or refractory Hodgkin's disease: a children's oncology group report. J Clin Oncol 27 (9): 1456-61, 2009.|
|10.||Wimmer RS, Chauvenet AR, London WB, et al.: APE chemotherapy for children with relapsed Hodgkin disease: a Pediatric Oncology Group trial. Pediatr Blood Cancer 46 (3): 320-4, 2006.|
|11.||Sandlund JT, Pui CH, Mahmoud H, et al.: Efficacy of high-dose methotrexate, ifosfamide, etoposide and dexamethasone salvage therapy for recurrent or refractory childhood malignant lymphoma. Ann Oncol 22 (2): 468-71, 2011.|
|12.||Schulz H, Rehwald U, Morschhauser F, et al.: Rituximab in relapsed lymphocyte-predominant Hodgkin lymphoma: long-term results of a phase 2 trial by the German Hodgkin Lymphoma Study Group (GHSG). Blood 111 (1): 109-11, 2008.|
|13.||Younes A, Bartlett NL, Leonard JP, et al.: Brentuximab vedotin (SGN-35) for relapsed CD30-positive lymphomas. N Engl J Med 363 (19): 1812-21, 2010.|
|14.||Seattle Genetics, Inc.: ADCETRIS (Brentuximab Vedotin): Prescribing Information. Bothell, Wa: Seattle Genetics, 2012. Available online. Last accessed April 04, 2014.|
|15.||Younes A, Gopal AK, Smith SE, et al.: Results of a pivotal phase II study of brentuximab vedotin for patients with relapsed or refractory Hodgkin's lymphoma. J Clin Oncol 30 (18): 2183-9, 2012.|
|16.||Rancea M, Monsef I, von Tresckow B, et al.: High-dose chemotherapy followed by autologous stem cell transplantation for patients with relapsed/refractory Hodgkin lymphoma. Cochrane Database Syst Rev 6: CD009411, 2013.|
|17.||Aparicio J, Segura A, Garcerá S, et al.: ESHAP is an active regimen for relapsing Hodgkin's disease. Ann Oncol 10 (5): 593-5, 1999.|
|18.||Kobrinsky NL, Sposto R, Shah NR, et al.: Outcomes of treatment of children and adolescents with recurrent non-Hodgkin's lymphoma and Hodgkin's disease with dexamethasone, etoposide, cisplatin, cytarabine, and l-asparaginase, maintenance chemotherapy, and transplantation: Children's Cancer Group Study CCG-5912. J Clin Oncol 19 (9): 2390-6, 2001.|
|19.||Zinzani PL, Bendandi M, Stefoni V, et al.: Value of gemcitabine treatment in heavily pretreated Hodgkin's disease patients. Haematologica 85 (9): 926-9, 2000.|
|20.||Santoro A, Bredenfeld H, Devizzi L, et al.: Gemcitabine in the treatment of refractory Hodgkin's disease: results of a multicenter phase II study. J Clin Oncol 18 (13): 2615-9, 2000.|
|21.||Baker KS, Gordon BG, Gross TG, et al.: Autologous hematopoietic stem-cell transplantation for relapsed or refractory Hodgkin's disease in children and adolescents. J Clin Oncol 17 (3): 825-31, 1999.|
|22.||Shafer JA, Heslop HE, Brenner MK, et al.: Outcome of hematopoietic stem cell transplant as salvage therapy for Hodgkin's lymphoma in adolescents and young adults at a single institution. Leuk Lymphoma 51 (4): 664-70, 2010.|
|23.||Claviez A, Sureda A, Schmitz N: Haematopoietic SCT for children and adolescents with relapsed and refractory Hodgkin's lymphoma. Bone Marrow Transplant 42 (Suppl 2): S16-24, 2008.|
|24.||Peniket AJ, Ruiz de Elvira MC, Taghipour G, et al.: An EBMT registry matched study of allogeneic stem cell transplants for lymphoma: allogeneic transplantation is associated with a lower relapse rate but a higher procedure-related mortality rate than autologous transplantation. Bone Marrow Transplant 31 (8): 667-78, 2003.|
|25.||Lieskovsky YE, Donaldson SS, Torres MA, et al.: High-dose therapy and autologous hematopoietic stem-cell transplantation for recurrent or refractory pediatric Hodgkin's disease: results and prognostic indices. J Clin Oncol 22 (22): 4532-40, 2004.|
|26.||Akhtar S, Abdelsalam M, El Weshi A, et al.: High-dose chemotherapy and autologous stem cell transplantation for Hodgkin's lymphoma in the kingdom of Saudi Arabia: King Faisal specialist hospital and research center experience. Bone Marrow Transplant 42 (Suppl 1): S37-S40, 2008.|
|27.||Harris RE, Termuhlen AM, Smith LM, et al.: Autologous peripheral blood stem cell transplantation in children with refractory or relapsed lymphoma: results of Children's Oncology Group study A5962. Biol Blood Marrow Transplant 17 (2): 249-58, 2011.|
|28.||Wadehra N, Farag S, Bolwell B, et al.: Long-term outcome of Hodgkin disease patients following high-dose busulfan, etoposide, cyclophosphamide, and autologous stem cell transplantation. Biol Blood Marrow Transplant 12 (12): 1343-9, 2006.|
|29.||Jabbour E, Hosing C, Ayers G, et al.: Pretransplant positive positron emission tomography/gallium scans predict poor outcome in patients with recurrent/refractory Hodgkin lymphoma. Cancer 109 (12): 2481-9, 2007.|
|30.||Cooney JP, Stiff PJ, Toor AA, et al.: BEAM allogeneic transplantation for patients with Hodgkin's disease who relapse after autologous transplantation is safe and effective. Biol Blood Marrow Transplant 9 (3): 177-82, 2003.|
|31.||Claviez A, Klingebiel T, Beyer J, et al.: Allogeneic peripheral blood stem cell transplantation following fludarabine-based conditioning in six children with advanced Hodgkin's disease. Ann Hematol 83 (4): 237-41, 2004.|
|32.||Sureda A, Schmitz N: Role of allogeneic stem cell transplantation in relapsed or refractory Hodgkin's disease. Ann Oncol 13 (Suppl 1): 128-32, 2002.|
|33.||Carella AM, Cavaliere M, Lerma E, et al.: Autografting followed by nonmyeloablative immunosuppressive chemotherapy and allogeneic peripheral-blood hematopoietic stem-cell transplantation as treatment of resistant Hodgkin's disease and non-Hodgkin's lymphoma. J Clin Oncol 18 (23): 3918-24, 2000.|
|34.||Robinson SP, Goldstone AH, Mackinnon S, et al.: Chemoresistant or aggressive lymphoma predicts for a poor outcome following reduced-intensity allogeneic progenitor cell transplantation: an analysis from the Lymphoma Working Party of the European Group for Blood and Bone Marrow Transplantation. Blood 100 (13): 4310-6, 2002.|
|35.||Devetten MP, Hari PN, Carreras J, et al.: Unrelated donor reduced-intensity allogeneic hematopoietic stem cell transplantation for relapsed and refractory Hodgkin lymphoma. Biol Blood Marrow Transplant 15 (1): 109-17, 2009.|
|36.||Robinson SP, Sureda A, Canals C, et al.: Reduced intensity conditioning allogeneic stem cell transplantation for Hodgkin's lymphoma: identification of prognostic factors predicting outcome. Haematologica 94 (2): 230-8, 2009.|
|37.||Wadhwa P, Shina DC, Schenkein D, et al.: Should involved-field radiation therapy be used as an adjunct to lymphoma autotransplantation? Bone Marrow Transplant 29 (3): 183-9, 2002.|
|38.||Morabito F, Stelitano C, Luminari S, et al.: The role of high-dose therapy and autologous stem cell transplantation in patients with primary refractory Hodgkin's lymphoma: a report from the Gruppo Italiano per lo Studio dei Linfomi (GISL). Bone Marrow Transplant 37 (3): 283-8, 2006.|
|39.||Akhtar S, El Weshi A, Rahal M, et al.: High-dose chemotherapy and autologous stem cell transplant in adolescent patients with relapsed or refractory Hodgkin's lymphoma. Bone Marrow Transplant 45 (3): 476-82, 2010.|
|40.||Moskowitz CH, Kewalramani T, Nimer SD, et al.: Effectiveness of high dose chemoradiotherapy and autologous stem cell transplantation for patients with biopsy-proven primary refractory Hodgkin's disease. Br J Haematol 124 (5): 645-52, 2004.|
|41.||Fosså A, Santoro A, Hiddemann W, et al.: Gemcitabine as a single agent in the treatment of relapsed or refractory aggressive non-Hodgkin's lymphoma. J Clin Oncol 17 (12): 3786-92, 1999.|
|42.||Gopal AK, Ramchandren R, O'Connor OA, et al.: Safety and efficacy of brentuximab vedotin for Hodgkin lymphoma recurring after allogeneic stem cell transplantation. Blood 120 (3): 560-8, 2012.|
Children and adolescent survivors of Hodgkin lymphoma are at risk for numerous late complications of treatment related to radiation, specific chemotherapeutic exposures, and surgical staging. Adverse treatment effects may impact oral/dental health; musculoskeletal growth and development; endocrine, reproductive, cardiovascular and pulmonary function; and risk of secondary carcinogenesis. In the past 30 to 40 years, pediatric Hodgkin lymphoma therapy has changed dramatically to proactively limit exposure to radiation and chemotherapeutic agents, such as anthracyclines, alkylating agents, and bleomycin. When counseling individual patients about the risk for specific treatment complications, the era of treatment should be considered.
The following table summarizes late health effects observed in Hodgkin lymphoma survivors followed by a limited discussion of the common late effects. (Refer to the PDQ summary on Late Effects of Treatment for Childhood Cancer for a full discussion of the late effects of cancer treatment in children and adolescents.)
|Health Effects||Predisposing Therapy||Clinical Manifestations|
|Oral/dental||Any chemotherapy in a patient who has not developed permanent dentition||Dental maldevelopment (tooth/root agenesis, microdontia, root thinning and shortening, enamel dysplasia)|
|Radiation impacting oral cavity and salivary glands||Salivary gland dysfunction|
|Accelerated dental decay|
|Thyroid||Radiation impacting thyroid gland||Hypothyroidism|
|Cardiovascular||Radiation impacting cardiovascular structures||Subclinical left ventricular dysfunction|
|Heart valve dysfunction|
|Coronary, carotid, subclavian vascular disease|
|Anthracycline chemotherapy||Subclinical left ventricular dysfunction|
|Congestive heart failure|
|Pulmonary||Radiation impacting the lungs||Subclinical pulmonary dysfunction|
|Musculoskeletal||Radiation of musculoskeletal tissues in any patient who is not skeletally mature||Growth impairment|
|Glucocorticosteroids||Bone mineral density deficit|
|Reproductive||Alkylating agent chemotherapy||Hypogonadism|
|Immune||Splenectomy||Overwhelming post-splenectomy sepsis|
|Subsequent neoplasm or disease||Alkylating agent chemotherapy||Myelodysplasia/acute myeloid leukemia|
|Epipodophyllotoxins||Myelodysplasia/acute myeloid leukemia|
|Radiation||Solid benign and malignant neoplasms|
Male Gonadal Toxicity
Female Gonadal Toxicity
Hodgkin lymphoma survivors exposed to doxorubicin or thoracic radiation therapy are at risk for long-term cardiac toxicity. The effects of thoracic radiation therapy are difficult to separate from those of anthracyclines because few children undergo thoracic radiation therapy without the use of anthracyclines. The pathogenesis of injury differs, however, with radiation primarily affecting the fine vasculature of the heart, and anthracyclines directly damaging myocytes.[19,20]
Radiation-associated cardiovascular toxicity
The risks to the heart are related to the amount of radiation delivered to different depths of the heart, volume and specific areas of the heart irradiated, total and fractional irradiation dose, age at exposure, and latency period.
Selected studies evaluating cardiovascular toxicity associated with radiation
(Refer to the Cardiovascular Disease in Select Cancer Subgroups: Hodgkin lymphoma section in the PDQ summary on Late Effects of Treatment for Childhood Cancer for information on studies evaluating cardiovascular toxicity associated with radiation.)
Anthracycline-related cardiac toxicity
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|14.||van der Kaaij MA, Heutte N, Meijnders P, et al.: Premature ovarian failure and fertility in long-term survivors of Hodgkin's lymphoma: a European Organisation for Research and Treatment of Cancer Lymphoma Group and Groupe d'Etude des Lymphomes de l'Adulte Cohort Study. J Clin Oncol 30 (3): 291-9, 2012.|
|15.||Constine LS, Donaldson SS, McDougall IR, et al.: Thyroid dysfunction after radiotherapy in children with Hodgkin's disease. Cancer 53 (4): 878-83, 1984.|
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|18.||Loeffler JS, Tarbell NJ, Garber JR, et al.: The development of Graves' disease following radiation therapy in Hodgkin's disease. Int J Radiat Oncol Biol Phys 14 (1): 175-8, 1988.|
|19.||Fajardo LF, Eltringham JR, Steward JR: Combined cardiotoxicity of adriamycin and x-radiation. Lab Invest 34 (1): 86-96, 1976.|
|20.||Adams MJ, Lipshultz SE: Pathophysiology of anthracycline- and radiation-associated cardiomyopathies: implications for screening and prevention. Pediatr Blood Cancer 44 (7): 600-6, 2005.|
|21.||Hancock SL, Tucker MA, Hoppe RT: Factors affecting late mortality from heart disease after treatment of Hodgkin's disease. JAMA 270 (16): 1949-55, 1993.|
|22.||King V, Constine LS, Clark D, et al.: Symptomatic coronary artery disease after mantle irradiation for Hodgkin's disease. Int J Radiat Oncol Biol Phys 36 (4): 881-9, 1996.|
|23.||Adams MJ, Lipshultz SE, Schwartz C, et al.: Radiation-associated cardiovascular disease: manifestations and management. Semin Radiat Oncol 13 (3): 346-56, 2003.|
|24.||Küpeli S, Hazirolan T, Varan A, et al.: Evaluation of coronary artery disease by computed tomography angiography in patients treated for childhood Hodgkin's lymphoma. J Clin Oncol 28 (6): 1025-30, 2010.|
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|30.||Lipshultz SE, Lipsitz SR, Sallan SE, et al.: Long-term enalapril therapy for left ventricular dysfunction in doxorubicin-treated survivors of childhood cancer. J Clin Oncol 20 (23): 4517-22, 2002.|
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|32.||van Leeuwen FE, Klokman WJ, Veer MB, et al.: Long-term risk of second malignancy in survivors of Hodgkin's disease treated during adolescence or young adulthood. J Clin Oncol 18 (3): 487-97, 2000.|
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The PDQ cancer information summaries are reviewed regularly and updated as new information becomes available. This section describes the latest changes made to this summary as of the date above.
Added text to state that a family history of Hodgkin lymphoma in siblings or parents has been associated with an increased risk of this disease (cited Crump et al. as reference 11).
Added Ilivitzki et al. as reference 34.
Diagnosis and Staging
Added Haase et al. as reference 3.
Added text to state that a report of 38 patients compared bone marrow involvement diagnosed by biopsy with bone marrow involvement assessed by PET scan positivity; the report showed that the sensitivity of PET was 87.5% and the negative predictive value of PET was 96% for bone marrow involvement (cited Agrawal et al. as reference 12).
Added Cheng et al. as reference 13.
Added text to state that the concept of reduced frequency of imaging has been supported by other investigations (cited Hartridge-Lambert et al. and Friedmann et al. as references 36 and 37, respectively).
Treatment for Newly Diagnosed Children and Adolescents with Hodgkin Lymphoma
Added Maraldo et al. as reference 30.
Revised Table 3 to update the radiation field definitions (cited Terezakis et al. as reference 31).
Treatment of Primary Refractory/Recurrent Hodgkin Lymphoma in Children and Adolescents
Added Rancea et al. as reference 16.
Late Effects from Childhood/Adolescent Hodgkin Lymphoma Therapy
Added Koontz et al. and Schellong et al. as references 46 and 47, respectively.
This summary is written and maintained by the PDQ Pediatric Treatment Editorial Board, which is editorially independent of NCI. The summary reflects an independent review of the literature and does not represent a policy statement of NCI or NIH. More information about summary policies and the role of the PDQ Editorial Boards in maintaining the PDQ summaries can be found on the About This PDQ Summary and PDQ NCI's Comprehensive Cancer Database pages.
Purpose of This Summary
This PDQ cancer information summary for health professionals provides comprehensive, peer-reviewed, evidence-based information about the treatment of childhood Hodgkin lymphoma. It is intended as a resource to inform and assist clinicians who care for cancer patients. It does not provide formal guidelines or recommendations for making health care decisions.
Reviewers and Updates
This summary is reviewed regularly and updated as necessary by the PDQ Pediatric Treatment Editorial Board, which is editorially independent of the National Cancer Institute (NCI). The summary reflects an independent review of the literature and does not represent a policy statement of NCI or the National Institutes of Health (NIH).
Board members review recently published articles each month to determine whether an article should:
Changes to the summaries are made through a consensus process in which Board members evaluate the strength of the evidence in the published articles and determine how the article should be included in the summary.
The lead reviewers for Childhood Hodgkin Lymphoma Treatment are:
Any comments or questions about the summary content should be submitted to Cancer.gov through the Web site's Contact Form. Do not contact the individual Board Members with questions or comments about the summaries. Board members will not respond to individual inquiries.
Levels of Evidence
Some of the reference citations in this summary are accompanied by a level-of-evidence designation. These designations are intended to help readers assess the strength of the evidence supporting the use of specific interventions or approaches. The PDQ Pediatric Treatment Editorial Board uses a formal evidence ranking system in developing its level-of-evidence designations.
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The preferred citation for this PDQ summary is:
National Cancer Institute: PDQ® Childhood Hodgkin Lymphoma Treatment. Bethesda, MD: National Cancer Institute. Date last modified <MM/DD/YYYY>. Available at: http://cancer.gov/cancertopics/pdq/treatment/childhodgkins/HealthProfessional. Accessed <MM/DD/YYYY>.
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Last Revised: 2014-04-08
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