Carcinoma of the rectum.
D000328:Adult; D000367:Age Factors; D000368:Aged; D003093:Colitis, Ulcerative / Q000150:complications; D005260:Female; D005860:Germany, West; D006801:Humans; D007417:Intestinal Polyps / Q000150:complications; D008297:Male; D008722:Methods; D008875:Middle Aged; D011230:Precancerous Conditions; D012004:Rectal Neoplasms / Q000175:diagnosis / Q000453:epidemiology / Q000601:surgery*; D012189:Retrospective Studies; D012737:Sex Factors; D013997:Time Factors