低位直肠癌内括约肌切除是将直肠切除扩大至内括约肌间隙的一种术式,该手术是在腹会阴切除、直肠系膜切除、全部或部分内括约肌切除下同时进行。该研究对此手术的远期效果以及排便节制功能做一评估。方法:1984-2000年共对121例低位直肠癌施行内括约肌切除,手术按照以下标准:a.? Intramasophageal sphincterotomy in the lower rectal is a surgical procedure that expands the rectocele to the space of the internal sphincter which is performed concurrently with abdominoperinectomy, mesorectal excision, total or partial sphincterotomy. The study evaluated the long-term effects of this procedure and the defecation control function. Methods: A total of 121 cases of rectal cancer were treated by internal sphincter excision from 1984 to 2000 according to the following criteria: a.