Assessments
Adenomyosis was diagnosed as the maximal junctional zone thickness (JZmax) ≥12 mm, JZmax/entire myometrium > 40% and the difference between the maximum and minimum > 5 mm thick based on MRI7,10. Adenomyosis-caused dysmenorrhea was defined as the clinically recorded patient-reported pain during the menstrual cycle11. Adenomyosis-caused menorrhagia was defined as the clinically recorded patient-reported heavy or prolonged menstrual bleeding12. The relief of dysmenorrhea and menorrhagia was defined as patient-reported symptom relief of dysmenorrhea and menorrhagia within 12 months after FUAS. The recurrence was defined as patient-reported dysmenorrhea and/or menorrhagia after 12 months following a period in which the symptomatic relief lasted for at least 3 months after FUAS. The uterine volumes and the lesion volumes of adenomyosis were calculated using the following formula: 0.52*length*anteroposterior diameter*transverse diameter13.