What are fibroids?

Uterine fibroids are tumors or growths, made up of muscle cells and other tissues that grow within the wall of the uterus (or womb). Although fibroids are sometimes called tumors, they are almost always benign (not cancerous). The medical term for fibroids is uterine leiomyomata (you-ter-in lie-oh-my-oh-mah-tah). Fibroids can grow as a single growth or in clusters (or groups). Their size can vary from small, like an apple seed (or less than one inch), to even larger than a grapefruit, or eight inches across or more.


Information provided by:  The National Women's Health Information Center which is Sponsored by the Office on Women's Health in the U.S. Department of Health and Human Services