Treatment failure had 8 cases, including 6 cases of rectal mucosal prolapse and 2 full thickness rectal intussusception with pelvic floor hernia, which were seen in the repeated pelviography combined with defecography. 治疗失败8例,影像学复查6例为直肠黏膜脱垂,2例为直肠全层套叠合并盆底疝。