The disorder is marked by uterine tissue growing outside the uterus, typically in the pelvic area.

As the uterine tissue is removed, the uterus will contract.

A biopsy of uterine tissue can be obtained for diagnosis and to eliminate other possible causes of heavy menstrual bleeding.

Infection or a breakdown of uterine fibroid tissue.

Until recently, the only definitive way to diagnose adenomyosis was to perform a hysterectomy and examine the uterine tissue under a microscope.

Endometriosis when uterine tissue grows outside the uterus could be the culprit; roughly 10 percent of women have it.

This growth of uterine lining tissue outside the uterus can cause severe pelvic pain.

Leptin is also expressed in fetal membranes and the uterine tissue.

Blockage can be caused by infections or can result from endometriosis, a condition in which pieces of uterine tissue appear outside the uterus.

A sample of uterine tissue is viewed under a microscope to check for abnormal cells.