[The early diagnosis of colon tumors].
D000328:Adult; D000368:Aged; D003110:Colonic Neoplasms / Q000175:diagnosis*; D003113:Colonoscopy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009780:Occult Blood; D012306:Risk; D012812:Sigmoidoscopy; D013997:Time Factors