Uterine fibroid embolization (UFE) is a minimally invasive procedure that shrinks fibroids by cutting off their blood supply. Instead of surgically removing fibroids, a doctor threads a thin catheter through an artery and injects tiny particles that block the vessels feeding the fibroid, causing it to shrink over time. The procedure is performed by an interventional radiologist, takes about an hour, and typically requires one to two weeks of recovery rather than the longer healing time associated with surgery.
How UFE Works
Fibroids, like all living tissue, need a constant blood supply to survive. UFE exploits this by plugging the small arteries that feed them. The interventional radiologist inserts a catheter through either the femoral artery in the leg or the radial artery in the wrist, then guides it under real-time X-ray imaging to the uterine arteries. Once positioned, tiny particles (usually made from gelatin-based spheres or polyvinyl alcohol) are injected into the blood vessels supplying the fibroids.
These particles are small enough to travel deep into the capillaries surrounding the fibroid, where they lodge and block blood flow. Starved of oxygen and nutrients, the fibroid tissue dies and gradually shrinks. The surrounding healthy uterine tissue has enough alternative blood supply to recover, but the fibroid does not. You’re sedated during the procedure but typically awake, and a local numbing agent is delivered directly into the uterine arteries to help control pain.
Who Is a Good Candidate
UFE works best for women with symptomatic fibroids who want to keep their uterus but don’t want major surgery. It can treat multiple fibroids at once, since the particles travel through the entire uterine blood supply. That said, not all fibroid types respond equally. Fibroids that grow into the uterine cavity (submucosal) tend to shrink the most after embolization, while those attached to the outside of the uterus by a stalk (pedunculated subserosal) respond the least and are more common in patients who don’t see symptom improvement.
UFE is not an option during pregnancy, with an active untreated infection, or when there’s any suspicion of gynecologic cancer. Women with kidney problems or contrast dye allergies may need special consideration, since the procedure requires contrast dye and X-ray imaging to guide the catheter.
What to Expect During Recovery
The most common experience after UFE is something called post-embolization syndrome, which affects the majority of patients. It involves pelvic pain and cramping, low-grade fever, nausea, fatigue, and loss of appetite in the first few days. Pain typically worsens during the first two to three hours after the procedure and stays at that level for about 12 hours before gradually easing. The fever, nausea, and fatigue tend to peak around two to three days out.
Pain management starts before the procedure even begins and continues through recovery, typically involving a combination of anti-inflammatory medications and stronger pain relievers for the first several days. Most women need about one to two weeks before returning to normal activities, though cramping can sometimes linger for a couple of weeks. Strenuous exercise and heavy lifting should be avoided during that window.
How Effective Is UFE
Fibroids shrink significantly after embolization, though the full effect takes months to develop. At six months, studies show the dominant fibroid shrinks by about 38% in diameter. By 12 months, that number climbs to roughly 52%. Overall fibroid volume reduction ranges from 37% to 69% across published research.
Symptom relief is even more striking. In one study tracking outcomes at 12 months, heavy menstrual bleeding improved in 92% of patients, urinary pressure symptoms in 85%, pelvic pain in 84%, and painful periods in about 81%. The sense of an abdominal mass improved in 82% of cases. These numbers are consistent with the broader body of research on UFE, which generally shows high rates of symptom improvement.
UFE vs. Myomectomy: Long-Term Results
Myomectomy, the surgical removal of fibroids, remains the main alternative for women who want to preserve their uterus. A large study in a racially diverse health system compared long-term outcomes across different fibroid treatments over a median follow-up of nearly four years. The seven-year risk of needing a second procedure was 26% for UFE and about 21% for myomectomy. For context, endometrial ablation and hysteroscopic myomectomy had even higher reintervention rates of 35.5% and 37%, respectively. When patients did need a second procedure after any initial treatment, about 63% of those reinterventions were hysterectomies.
So while myomectomy has a modest edge in long-term durability, UFE still offers a meaningful advantage over some other uterus-sparing options. The tradeoff is that myomectomy requires a longer surgical recovery, while UFE gets most women back on their feet in one to two weeks.
Fertility After UFE
Fertility after UFE is one of the more nuanced parts of this decision. The procedure does not make pregnancy impossible, but the data is mixed compared to myomectomy. One randomized trial of 127 patients found a pregnancy rate of 50% in the UFE group versus 78% in the myomectomy group, though this difference wasn’t statistically significant due to the small sample size. More concerning, the miscarriage rate was 64% in the UFE group compared to 23% after myomectomy.
Other research paints a more balanced picture. Some studies have found no difference in live birth or miscarriage rates between the two approaches. In one prospective study, 28% of women who underwent UFE became pregnant, and 69% of those who conceived successfully gave birth. The miscarriage rate per pregnancy in that group was 19%, which is close to the general population rate. Notably, all live births in that study were delivered by cesarean section, and no cases of placenta previa or fetal death occurred.
The concern with pregnancy after UFE centers on altered blood flow to the uterine wall, which could theoretically raise the risk of complications like preterm delivery or postpartum bleeding. Because of this uncertainty, myomectomy is generally favored for women whose primary goal is future pregnancy, though UFE remains a reasonable option when surgery isn’t ideal.
Preparing for UFE
Before the procedure, you’ll typically have imaging done to map the size, number, and location of your fibroids. MRI is the most common choice because it gives the clearest picture of fibroid type and blood supply. Blood work to check kidney function is standard since contrast dye is used during the procedure. Your interventional radiologist will review all of this to determine whether your fibroids are likely to respond well and to plan the best catheter approach. The procedure itself is usually done as a same-day or overnight-stay case, with the entire embolization portion taking roughly 60 to 90 minutes.