在低位直肠癌手术的选择上,保肛手术一直是被关注的热点。随着直肠癌根治术全直肠系膜切除(TME)原则的导入,对直肠癌浸润转移规律的进一步认识和吻合技术、吻合器械的发展等使得超低位结-直肠(肛管)吻合成为可能,以及术前新辅助治疗(术前放化疗)的应用可使一部分中晚期低位直肠 In the selection of low rectal cancer surgery, anal sphincter surgery has been the focus of attention. With the introduction of the principle of total mesorectal excision (TME) for radical resection of the rectum, further understanding and anastomosis of the invasion and metastasis of rectal cancer and the development of anastomotic devices have made it possible to achieve ultra-low level anastomosis of the rectum (anal canal) Preoperative neoadjuvant therapy (preoperative radiotherapy and chemotherapy) can make part of the late low rectal