Polyp controversy.
D000328:Adult; D000367:Age Factors; D000368:Aged; D003110:Colonic Neoplasms / Q000453:epidemiology*; D006801:Humans; D007413:Intestinal Mucosa; D008297:Male; D008875:Middle Aged; D011127:Polyps / Q000453:epidemiology*; D011230:Precancerous Conditions / Q000453:epidemiology*; D012004:Rectal Neoplasms / Q000453:epidemiology; D012737:Sex Factors; D014481:United States