Ninety-one cases of tumors of anus and anal canal, treated in the Surgical Department of the National Cancer Institute of Milan from 1930 to 1965, are discussed. The series consists of 56 females and 35 males; the age of the patients ranges from 31 to 84 years. The distribution of the cases in relation to the age of the patients shows that the highest frequency of tumors was observed in the group of patients of 61–70 years. Twenty-seven patients presented inguinal metastatic nodes; in 18 of them metastases were bilateral. Nineteen patients (20.19 %) presented advanced tumors and could not be radically treated; 33 (36.3 %) underwent radiological treatment; 37 (40.6 %) were amenable to radical surgery: of these, in 26 a perineal resection and in 10 cases an abdomino-perineal resection were performed. In 2 of the last 10 cases a pelvic lymphadenectomy was also performed; in 5 of the patients radically operated a dissection of inguinal nodes was done. A regular follow-up was possible for 29 of the 37 patients radically treated: the 5 years survival rate for the two groups, perineal and abdomino-perineal resection, was of 48 per cent and 50 per cent respectively.
腹腔镜低位直肠癌括约肌切除术的思考与展望
