[Comprehensive clinical and roentgeno-endoscopic examination in the diagnosis of tumors of the large intestine].

A total of 247 patients with diseases of the abdominal organs were examined. 32 patients with rectal tumors were singled out. The diagnosis of "minor" colorectal cancer was particularly difficult. The authors believe that approaches to improvement of early diagnosis of colorectal cancer imply definition of roentgeno-endoscopic signs of rectal wall involvement which will help purposefully and timely detect precancer changes in rectal mucosa (dysplasia) as a marker of high risk of cancer.