Colonoscopy.
D001706:Biopsy; D003106:Colon; D003110:Colonic Neoplasms / Q000175:diagnosis / Q000601:surgery; D004724:Endoscopy / Q000009:adverse effects; D005336:Fiber Optic Technology; D006801:Humans; D007416:Intestinal Perforation / Q000209:etiology; D007417:Intestinal Polyps / Q000175:diagnosis / Q000601:surgery