[Experimental contribution to the etiology of colorectal carcinomas in the rat. Surgical technique and chronic administration of 1,2-dimethylhydrazine (author's transl)].

Report on three different operative methods on the colon and rectum as basis for studies of the pathogenesis of colorectal cancer. Resection and colostomy predispose to cancer growth at the anastomosis or colostomy after application of 1,2 dimethylhydrazine.