[Initial experiences with a nation-wide Austrian study of adjuvant chemo- and immunotherapy of colorectal cancer following radical surgery].

The outline of a cooperative study for adjuvant Chemo-Immunotherapy on radically operated Colon-Rectum-Carcinoma, is presented. One group of patients receiving Placebo, has to be randomized against another group who postoperatively received Chemo-Immunotherapy consisting of 5-Fluorouracil and CCNU and Corynebacterium parvum, which was administered intermittently, throughout one year. Patients with Rectum-Carcinoma additionally receive radio-therapy with 1500 rad HD before surgery and 4500--5000 rad HD postoperatively with Cobalt-60. The central documentation, and randomization, is provided at the Institute for Cancer Research of the University of Vienna.