Endometrial cancer is a disease in which malignant (cancer) cells form in the tissues of the endometrium.
The endometrium is the lining of the uterus, a hollow, muscular organ in a woman’s pelvis. In most non-pregnant women, the uterus is about 3 inches long. The lower, narrow end of the uterus is the cervix, which leads to the vagina.
SEER Cancer Stat Facts: Endometrial Cancer. National Cancer Institute. Bethesda, MD, http://seer.cancer.gov/statfacts/html/corp.html