Pregnancy outcome after magnetic resonance-guided focused ultrasound surgery (MRgFUS) for conservative treatment of uterine fibroids.

OBJECTIVE

To report all pregnancies to date after magnetic resonance-guided focused ultrasound surgery (MRgFUS) for the conservative treatment of clinically significant uterine fibroids.

DESIGN

Prospective registry of all known pregnancies occurring after MRgFUS maintained by the device manufacturer and reported to the Food and Drug Administration.

SETTING

World experience of pregnancies after treatment with reports from 13 sites in seven countries.

PATIENT(S): Fifty-one reproductive-age women with uterine leiomyomas.

INTERVENTION(S): Women underwent MRgFUS treatment for symptomatic uterine leiomyomas before this report.

MAIN OUTCOME MEASURE(S): Pregnancy outcomes and complications.

RESULT(S): Fifty-four pregnancies in 51 women have occurred after MRgFUS treatment of uterine leiomyomas. The mean time to conception was 8 months after treatment. Live births occurred in 41% of pregnancies, with a 28% spontaneous abortion rate, an 11% rate of elective pregnancy termination, and 11 (20%) ongoing pregnancies beyond 20 gestational weeks. The mean birth weight was 3.3 kg, and the vaginal delivery rate was 64%.

CONCLUSION(S): Preliminary pregnancy experience after MRgFUS is encouraging, with a high rate of delivered and ongoing pregnancies.