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传统的腹会阴联合切除术(abdominoperineal resection,APR)一直是治疗无法保留肛门的低位直肠癌的标准术式。近年来研究显示,与保肛手术比较,直肠癌APR术后局部复发率反而较高。相关研究发现,主要是因为传统的APR术环周切缘(circumferencial resection margin,CRM)阳性率较高,目前认为,这是APR后局部复发和影响预后的主要原因~([1-2])。直肠癌肛提
Traditional abdominoperineal resection (APR) has been the standard procedure for the treatment of low rectal cancer that does not retain the anus. In recent years, studies have shown that, compared with the anal sphincter preserving surgery, rectal cancer APR postoperative local recurrence rate is rather high. Related studies have found that the main reason for the recurrence of APR and the prognosis after APR is mainly due to the high positive rate of conventional APR marginal circumcision (CRM) [1-2] . Rectal cancer anal mention