Although the exact cause of breast cancer is not known, most experts agree that some men have a greater risk for breast cancer than others. In the United States, male breast cancer mostly affects men age 65 and older.1
The things that most increase a man's risk of breast cancer include:1
Other things that increase a man's risk include:
The most common symptom of male breast cancer is a painless lump or swelling behind the nipple. Other symptoms can include a discharge from the nipple or a lump or thickening in the armpit. Although most men diagnosed with breast cancer are older than 65, breast cancer can appear in younger men. For this reason, any breast lump in an adult male is considered abnormal and should be checked out by a doctor.
Most male breast cancer is diagnosed with a biopsy to investigate a lump or thickening in the breast or armpit. Because there is no routine screening for breast cancer and a breast lump does not usually cause pain, sometimes breast cancer isn't discovered until it has spread to another area of the body and is causing other symptoms.
The main treatment for male breast cancer is surgery (total mastectomy) to remove the breast and sentinel lymph node biopsy. Because most men do not have very much breast tissue, breast-conserving surgery (lumpectomy) is not used.
There hasn't been much research on breast cancer treatments in men, because male breast cancer is so uncommon. But breast cancer in men is similar to breast cancer in women, and some of the same treatments may be used. These include radiation therapy, chemotherapy, hormone therapy, and targeted therapy.
Chemotherapy may be used after surgery to reduce the chance that breast cancer will come back somewhere else in the body. If the breast cancer is sensitive to certain hormones (meaning that the cells have estrogen/progesterone receptors), male breast cancer may be treated with a hormone-blocking agent called tamoxifen. Male breast cancer usually responds very well to chemotherapy or hormone therapy.
Additional information about male breast cancer is provided by the National Cancer Institute at www.cancer.gov/cancertopics/pdq/treatment/malebreast/Patient.
Male breast cancer is rare and makes up only about 1% of all breast cancers discovered each year. For this reason, many experts encourage men with breast cancer to talk to their doctors about clinical trials. These trials continue to look for better ways to treat male breast cancer.
|Primary Medical Reviewer||Sarah Marshall, MD - Family Medicine|
|Specialist Medical Reviewer||Douglas A. Stewart, MD - Medical Oncology|
|Last Revised||October 22, 2012|
Last Revised: October 22, 2012
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