GNRH1 and adenomyosis: A meta-analysis included 766 patients from 9 studies [60] demonstrated that compared with the HIFU group, the HIFU combined with GnRH-a group had a higher rate of uterine volume reduction (MD 7.51), a smaller volume of adenomyosis lesions (MD 4.11), lower dysmenorrhea visual analogue scale score (MD 1.27), and lower menstrual volume score (MD0.88).