What Is Hysterosalpingogram?

HSG is an X-ray of the uterine cavity and Fallopian tube. It is performed by injecting an iodine based dye into the uterine cavity and taking sequential X-rays of the pelvis. HSG testing can reveal uterine abnormalities including, uterine scar tissue, septum, fibroids, polyps, tubal blockage proximal or distal, Hydrosalpinx, proximal tubal disease, and pelvic adhesions. If there is no blockage present in the tubes, the dye will spill into the abdominal cavity. Dye flowing into the abdominal cavity does not guarantee normal function, but it is a positive sign.

In some cases, pushing dye through the fallopian tube will remove any material that is causing a blockage. In fact, some women have become pregnant following a Hysterosalpingogram without the use of further fertility treatments.