Oophorectomy is a surgery to remove one or both the ovaries. The ovaries are two organs situated on either side of your uterus, which produce eggs and hormones that regulate the menstrual cycle. Oophorectomy may be performed in cases of ovarian cancer, tumors, abscess involving the ovary and tube, endometriosis and ovarian torsion. The procedure is often performed with the removal of the uterus (hysterectomy).