A second minimally invasive procedure used at UCSF to treat symptomatic uterine fibroids is called uterine artery embolization (UAE, sometimes known as uterine fibroid embolization or UFE.) This procedure works by blocking the blood supply to fibroids, which causes the fibroid tumors to shrink and die. UAE is an alternative to open surgery or laparoscopic surgery for fibroids. UAE is performed while the patient is conscious, but sedated and feeling no pain, and does not require general anesthesia.