Gynecologic Oncology Program

Patient and Family Education

Uterine Sarcoma

What is Uterine Sarcoma?

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Sarcoma of the uterus, a very rare kind of cancer in women, is a disease in which cancer (malignant) cells grow in the muscles or other supporting tissues of the uterus. The uterus is the hollow, pear-shaped organ where a baby develops. Only about 1-2 percent of uterine cancers are sarcoma. The majority (95 percent) are endometrial cancers, which develop in the lining of the uterus.

There are three types of uterine sarcomas. Uterine carcinosarcomas develop in the endometrium and are the most common of the three types. Endometrial stromal sarcomas are tumors in the connective tissue of the endometrium and are the rarest of the three types. Uterine leiomyosarcomas are cancers in the muscular wall of the uterus.

This page was last updated on: October 6, 2009.