Colorectal cancer in patients over 80 years of age.
D000367:Age Factors; D000368:Aged; D003110:Colonic Neoplasms / Q000150:complications / Q000175:diagnosis / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D006801:Humans; D011183:Postoperative Complications; D012004:Rectal Neoplasms / Q000150:complications / Q000175:diagnosis / Q000401:mortality / Q000473:pathology / Q000601:surgery*