A Answers (2)
Mehmet Oz, MD, Cardiology, answeredThe noncancerous growths called uterine fibroids sometimes grow as large as a cantaloupe. Watch the animation to learn more about fibroids.
John Lipman, Interventional Radiology, answered
Uterine fibroids are benign (non-cancerous) tumors that are composed of smooth muscle and fibrous tissue. They are the most common pelvic tumor in women and affect 1 in every 3 women of childbearing age and as many as 80% of African-American women. These tumors can vary greatly in size and grow under estrogen and progesterone stimulation which explains why they often grow during pregnancy and why they are often not an issue once a woman reaches menopause. Fibroids can be tiny as a pea or they can grow to a very large size and can enlarge a woman's uterus to that of a pregnant woman. On rare occasions a fibroid can grow to an enormous size weighing as much as 50 lbs. One case report of a fibroid weighed in at 140 lbs.