title: Direct vision of the ampulla of Vater through the gastroduodenal fiberscope.
mesh_terms: D014670:Ampulla of Vater; D001660:Biliary Tract Diseases / Q000175:diagnosis; D019723:Endoscopes; D006801:Humans; D010182:Pancreatic Diseases / Q000175:diagnosis; D011859:Radiography