Colonoscopy.
D001706:Biopsy; D003106:Colon / Q000293:injuries / Q000473:pathology; D003108:Colonic Diseases / Q000175:diagnosis* / Q000473:pathology; D019723:Endoscopes; D004724:Endoscopy / Q000009:adverse effects; D005336:Fiber Optic Technology / Q000295:instrumentation; D005471:Fluoroscopy; D006801:Humans; D007416:Intestinal Perforation / Q000209:etiology; D012812:Sigmoidoscopy