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外科治疗是当前治疗大肠癌的主要方法,这一点是无可争议的,但腹会阴手术不能保留肛门,对于部分患者是难以接受的。自一九八○年Miles氏提出了腹会阴切除术后,半个多世纪过去了,虽则在手术方式以及在保留肛门的问题上作了许多改进和发展,但手术切除的五年生存率大致在50％上下。此外,在就诊的病例中,三分之一以上已失去了手术机会,部分患者即使作了剖腹探查,肿瘤仍无法切除,此类患者就必须寻求其它治疗方法。
Surgical treatment is currently the main method for the treatment of colorectal cancer. This is indisputable, but abdominal perineal surgery can not retain the anus and is difficult for some patients to accept. Since Miles introduced the abdominoperineal resection in 1980, more than half a century has passed. Although many improvements and developments have been made in the surgical method and in the preservation of the anus, the five-year survival rate of surgical resection is roughly the same. About 50%. In addition, more than one-third of the cases visited have lost the chance of surgery. Some patients even if they have undergone exploratory laparotomy, the tumor can not be removed, and such patients must seek other treatments.