[Cryosurgical treatment of polypi of the rectum and colon (author's transl]

Single cases of genuine colon rectum polypi, histologically adenomatous, adeno-villous and villous tumours have been treated with cryosurgery.

Relapses after polyectomy showing malignant degeneration; malignantly degenerated polypi, treatment of the basis of sessile lesions; sessile polypi up to 1 cm in diameter; extensive polyposis--polyposis of the rectum. After an initial regression of the polypous changes growth can be stated and quickly developing degenration leading to the formation of a carcinoma of the rectum and to stenoses of the lumen. It was only partially possible to clarify the cause of the growth in animal experiments. Primary application of low temperatures in polyposis recti and in primarily malignant degenerated polypi have to be avoided.