Uterine cancer is a general term that includes two types of cancer: endometrial cancer and uterine sarcoma. Endometrial cancer is more common (95% of all cases) and develops in the endometrium, the inner lining of your uterus. Uterine sarcoma is rare and develops in the myometrium, the muscle wall of your uterus.
In the United States, endometrial cancer is the most common cancer affecting the reproductive system of women and mainly develops after menopause. About 65,000 women, or 3%, will receive a diagnosis of uterine cancer at some point in their lives.
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