Uterine cancer is the uncontrolled growth of abnormal cells in the uterus (womb). The uterus is the organ where a baby grows during pregnancy. The endometrium is the lining of the uterus.

Uterine cancer is the most common gynecologic cancer in the United States. Endometrial cancer is the most common type of uterine cancer and develops in the lining of the uterus (endometrium).

Types of Uterine Cancer

There are several types of uterine cancer based on where the cancerous cells develop, and if they spread. Your treatment depends on the type of uterine cancer you have.

• Endometrial cancer—the most common type of uterine cancer, starts in the uterine lining (endometrium). According to the American Cancer Society, endometrial cancer tends to develop in women who are at least 60 years old.
• Uterine sarcoma—a rare type of uterine cancer that develops in the muscles and support tissue of the uterine wall.