Knoch H G
Zentralbl Chir. 1977;102(17):1034-9.
After presenting a classification of colon polyps the author comments on a follow-up group of 200 patients. Only genuine tumours have been taken into consideration. The rate of malignant degeneration is very high. Each determined polyp has to be removed totally to achieve prophylaxis. Postoperative control of the patients is an imperative demand for their lifetime.