Gastrointestinal endoscopy.
D000328:Adult; D014670:Ampulla of Vater / Q000473:pathology; D002648:Child; D003113:Colonoscopy; D003137:Common Bile Duct Diseases / Q000175:diagnosis; D004378:Duodenal Diseases / Q000175:diagnosis; D019723:Endoscopes; D004724:Endoscopy / Q000009:adverse effects / Q000266:history / Q000379:methods; D004935:Esophageal Diseases / Q000175:diagnosis; D005336:Fiber Optic Technology; D005767:Gastrointestinal Diseases / Q000175:diagnosis; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis; D049673:History, 20th Century; D006801:Humans; D007410:Intestinal Diseases / Q000175:diagnosis; D007417:Intestinal Polyps / Q000175:diagnosis; D010535:Laparoscopy; D010182:Pancreatic Diseases / Q000175:diagnosis; D012812:Sigmoidoscopy; D013272:Stomach Diseases / Q000175:diagnosis