Fibroids, also known as uterine leiomyomata, are noncancerous tumors of the uterus. Fibroids often result in pain and bleeding in premenopausal women, and are the leading cause of hysterectomy in the United States.

Fibroids — especially submucosal Fibroids — can cause infertility or pregnancy loss. Fibroids also raise the risk of certain pregnancy complications, such as placental abruption, fetal growth restriction and preterm delivery.

Fibroid tumors are composed of renegade muscle cells that grow into a fibrous "knot" or "mass" within the uterus. They most commonly occur in women between the ages 30 and 50. They are the most frequently seen tumors of the female reproductive system and more than 50% of women experience them at some point in time.

• In more than 99 percent of Fibroid cases, the tumors are benign (non-cancerous) however the symptoms can be severe. The most common symptoms caused by uterine Fibroids are:
• Heavy or prolonged menstrual periods
• Abnormal bleeding between menstrual periods
• Pelvic pain (caused by pressure on adjacent organs or death of part of the Fibroid tissue as it outgrows its supply of blood)
• Frequent urination
• Low back pain
• Pain during intercourse
• Enlarging abdomen from the large size of the Fibroids

Many women with Fibroids will eventually require surgical treatments such as Myomectomy Fibroid Surgery (removing only the Fibroids), Uterine Artery/Fibroid Embolization and Hysterectomy (removing the uterus with the Fibroids).