[Multiple carcinomas of the colon and rectum].

23 cases of multiple adenocarcinoma of the large intestine, 14 of them synchronous and 9 metachronous have been analysed. These represent 2.78% of all colon-rectum cancers (825) operated on during the period between 1958 and 1979 in the Surgery Division of the Turin General Hospital directed by Prof. C. Colombo. The classification, anatomo-pathological picture, and surgical treatment are presented, stress being laid in particular on pathogenetic hypotheses of multiple cancer of the large intestine.