直肠肿瘤局部切除术因兼有手术创伤小、风险低、能保肛且术后无性功能障碍和泌尿功能障碍等多项优点而受患者和医生的欢迎。然而,由于直肠特殊的解剖位置,某些部位的直肠肿瘤采用局部切除术在技术上有一定的困难。通常采用的直肠肿瘤局部切除术有经骶部的直肠肿瘤切除术(Kraske Local resection of rectal cancer due to both surgical trauma, low risk, can be anal and postoperative asexual dysfunction and urinary dysfunction, and many other benefits by the patients and doctors welcome. However, due to the special anatomic location of the rectum, partial resection of rectal tumors in some areas is technically difficult. Commonly used rectal tumor resection of the sacral rectal tumor resection (Kraske