Colorectal cancer in the elderly.
D000230:Adenocarcinoma / Q000601:surgery; D002288:Adenocarcinoma, Mucinous / Q000601:surgery; D000368:Aged; D003110:Colonic Neoplasms / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D011379:Prognosis; D012004:Rectal Neoplasms / Q000601:surgery*; D012189:Retrospective Studies