Ultrasound-Guided Percutaneous Microwave Ablation for Submucosal Uterine Fibroids

Study Objective: To prospectively evaluate the efficiency and safety of ultrasound-guided percutaneous microwave ablation (PMWA) in treating symptomatic submucosal uterine myomas. Design: Self-controlled study (Canadian Task Force classification II-1). Setting: Single center. Patients: Twenty-two premenopausal women with 22 symptomatic submucosal uterine myomas. Intervention: All patients underwent ultrasound-guided PMWA. Measurements and Main Results: PMWA was performed in 22 premenopausal women with 22 symptomatic submucosal uterine myomas. Mean (SD) patient age was 42 (4.60) years (95% confidence interval [CI], 39.96-44.04). Five symptomatic submucosal uterine myomas were identified as type 0, 7 as type 1, and 10 as type 2. Contrast-enhanced ultrasound and magnetic resonance imaging were performed before and after surgery. Myoma volume, hemoglobin concentration, and scores on the UFS-QOL (Uterine Fibroid Symptom and Quality of Life) questionnaire were recorded before and at 3 and 12 months after ablation. Complications were also recorded. In all patients, therapy was completed with a single ablation. The baseline diameter of the symptomatic submucosal uterine myomas was 4.90 (1.60) cm. Mean myoma volume reduction rate was 81.46% (16.33%) (95% CI, 73.06%-89.86%) at 3 months (p <.001) and reached 90.00% (9.79%) (95% CI, 85.07-95.13) at 12 months (p <.001). At 3 months after ablation, hemoglobin concentration increased from 88.64 (21.87) g/L (95% Cl, 78.94-98.34) to 123.21 (15.77) g/L (95% Cl, 115.10-131.32) (p <.001), and remained stable at 12 months, with a value of 125.92 (14.90) g/L (95% Cl, 117.98-133.86). Scores on the UFS-QOL were comparable, with normal levels observed at I year. No major complications were observed. Nine patients were discharged with necrotic masses. Conclusion: PMWA seems to be effective and safe for treatment of submucosal myomas.(c) 2014 AAGL. All rights reserved.