Fibroids

Fibroids are non-cancerous tumors that grow in or around the womb (uterus). Fibroids are sometimes known as uterine myomas or fibromyomas. Fibroids are made of muscle cells and other tissues that grow in and around the wall of the womb or uterus. The cause of fibroids is unknown. Risk factors include being overweight or obese and is mostly seen in African-American. They can grow anywhere in the womb and are named according to their origin:

Intramural fibroids: These type grows within the muscle tissue of the womb. This is the most common place for fibroids to form.
Sub serous fibroids: It grows from the outside wall of the womb into the pelvis.
Sub mucous fibroids: It is generally seen in the inner wall into the middle of the womb.
Pedunculated fibroids: It grows from the outside wall of the womb and is attached to it by a narrow stalk.