Colons and keyholes.
D003106:Colon / Q000473:pathology / Q000601:surgery*; D003110:Colonic Neoplasms / Q000473:pathology / Q000601:surgery*; D006801:Humans; D007431:Intraoperative Complications; D010535:Laparoscopy; D011183:Postoperative Complications; D012004:Rectal Neoplasms / Q000473:pathology / Q000601:surgery*; D012007:Rectum / Q000473:pathology / Q000601:surgery*