Duodenoscopy.
D000006:Abdomen, Acute / Q000175:diagnosis; D014670:Ampulla of Vater; D002404:Catheterization; D002758:Cholangiography; D004378:Duodenal Diseases / Q000175:diagnosis*; D004379:Duodenal Neoplasms / Q000175:diagnosis; D004724:Endoscopy; D005336:Fiber Optic Technology; D006470:Hemorrhage / Q000175:diagnosis; D006801:Humans; D007417:Intestinal Polyps / Q000175:diagnosis; D055095:Optics and Photonics; D010182:Pancreatic Diseases / Q000175:diagnosis