Safety and five-year re-intervention following magnetic resonance-guided focused ultrasound (MRgFUS) for uterine fibroids.

OBJECTIVE: To examine the safety and re-intervention rates following magnetic resonance-guided focused ultrasound (MRgFUS) for uterine fibroids at 5 years. To assess how the non-perfused volume (NPV), fibroid signal intensity and use of gonadotrophin-releasing hormone analogues (GnRHa) affect the re-intervention rates.

STUDY DESIGN: Cohort study of women undergoing MRgFUS for treatment of their uterine fibroids between 2003 and 2010.

RESULTS: Of 280 women undergoing MRgFUS the rate of minor complications was 3.9% and there were 3 serious complications (1.1%) including one skin burn, a fibroid expulsion and one case of persistent neuropathy. The NPVs achieved following MRgFUS have increased as the experience with this treatment has grown. In a 5-year follow-up study of 162 women, the overall re-intervention rate was 58.64%, but in those treatments with greater than 50% NPV the re-intervention rate was 50%.

CONCLUSION: MRgFUS treatment of uterine fibroids is a safe treatment for uterine fibroids. The re-intervention rate at 5 years is high, but the improvements in NPVs achieved may further improve the long term results.