National survey of bladder endometriosis cases in Japan

Aim We aimed to describe the clinical presentation, operative or medical management, and postoperative recurrence of bladder endometriosis (BE). Methods We conducted a national survey to investigate BE cases from 2006 to 2016 in Japan. Histologically diagnosed cases were extracted and then investigated for the following factors: age at diagnosis, body mass index, symptoms, imaging modalities, surgical therapy, hormonal therapy, follow‐up period, and postoperative recurrence. Results Eighty‐nine patients with pathologically benign BE were identified. Eighty patients underwent surgery, whereas nine did not. Moreover, 34 and 44 patients underwent transurethral resection (TUR) and partial cystectomy (PC), respectively. Cumulative recurrence rates were significantly higher with TUR than with PC (p