HysterosalpingogramHSG (Hysterosalpingography), Uterosalpingography Test Overview A hysterosalpingogram (HSG) is an
X-ray test that looks at the inside of
the uterus and
fallopian tubes and the area around them. It often is
done for women who are having a hard time becoming pregnant (infertile). During a hysterosalpingogram, a dye (contrast material) is put through a thin tube that
is put through the vagina and into the uterus. Because the uterus and the
fallopian tubes are hooked together, the dye will flow into the
fallopian tubes. Pictures are taken using a steady beam of X-ray (fluoroscopy) as the dye passes through the uterus and
fallopian tubes. The pictures can show
problems such as an injury or abnormal structure of the uterus or fallopian
tubes, or a blockage that would prevent an egg moving through a fallopian tube
to the uterus. A blockage also could prevent sperm from moving into
a fallopian tube and joining (fertilizing) an egg. A hysterosalpingogram also may find
problems on the inside of the uterus that prevent a fertilized egg
from attaching (implanting) to the uterine wall. See an illustration of a
hysterosalpingogram .
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