Uterine Artery Embolization for Large Fibroids
Introduction to UAE
- The American College of Radiology recommends uterine artery embolization (UAE) as the preferred option for patients with two large fibroids, due to its robust evidence demonstrating efficacy for large and multiple fibroids, with clinical success rates of 81-100% and proven long-term outcomes 1, 2
Efficacy and Outcomes
- UAE has extensive published evidence including randomized controlled trials and large registries with over 3,000 patients, demonstrating 95% symptomatic relief at 12 months 2, 3
- The procedure achieves median fibroid volume reductions of 42% and uterine volume reductions of 35% by 3 months, with continued improvement over time 1, 2
- Symptom improvement includes: menorrhagia (83%), dysmenorrhea (77%), and urinary frequency (86%) 1, 2
Long-Term Durability
- At 5 years, UAE maintains >50% average decrease in fibroid size 4, 5
- Reintervention rates are 28% at 5 years and 35% at 10 years 4, 5
- During 3-year follow-up, only 14.4% of patients required additional procedures (9.8% repeat UAE, 2.8% myomectomy, 1.8% hysterectomy) 1, 3
Procedure Details
- UAE is performed under conscious sedation via femoral or radial arterial approach 4
- Both uterine arteries are embolized using particulate embolic agents 1, 2
Complications and Side Effects
- Major complications occur in <3% of patients 1, 3
- Up to 10% may require readmission for pain control 1, 3
- Post-embolization syndrome (flu-like symptoms with pain, nausea, fevers) is common but self-limited 4
- Age-dependent amenorrhea risk: <2-3% for women <45 years, up to 20% for women >45 years 1, 3
Comparison to Other Modalities
- At 4 years, UAE shows equivalent quality of life scores and reintervention rates compared to myomectomy 4
- UAE has lower rates of new fibroid formation than myomectomy 4
- UAE demonstrates significantly greater symptom improvement and lower reintervention rates (13% vs 30% at 2 years) compared to MR-guided focused ultrasound 4