肿瘤下缘位于腹膜反折以下,距肛缘8cm以内为低位直肠癌。低位直肠癌约占大肠癌的60%;占直肠癌的74.14%。以往认为此类病例只有行 Miles 术才能达到根治。随着对直肠癌浸润转移规律研究的深入,已证实低位直肠癌保肛手术不但可以达到和 Miles 术相同的根治范围,取得相同的5年生存率,并可以恢复良好的排便功能。各种先进吻合器的问世以及手 The lower edge of the tumor is located below the peritoneal reflex, and within 8 cm from the anal margin is low rectal cancer. Low rectal cancer accounts for about 60% of colorectal cancer; it accounts for 74.14% of rectal cancer. In the past, such cases were only treated with Miles to achieve radical cure. With the deepening of the research on the invasion and metastasis of rectal cancer, it has been confirmed that the low rectal cancer sphincter preservation surgery not only achieves the same radical range as Miles’ surgery, but also achieves the same 5-year survival rate and can restore good defecation function. The advent of various advanced staplers and hands