[Malignant villous neoplasms of the large intestine].

An investigation of 532 villous tumors of the colon resected in 490 patients has shown that malignant tumors take place more often in patients with an increased volume of the villous component and the size of the tumor, in patients with more distal localization of adenoma in the colon and in adult people. In 38% of the patients the villous formation was removed through the endoscope, 12% of the patients were subjected to transanal dissection of the rectum tumor and 47.8%--to different operations with resection of the intestine.