title: Biliary reflux demonstrating an impacted ampullary stone.
mesh_terms: D000368:Aged; D014670:Ampulla of Vater; D001466:Barium Sulfate; D001655:Bile Reflux / Q000000981:diagnostic imaging*; D001660:Biliary Tract Diseases / Q000000981:diagnostic imaging*; D002760:Cholangiopancreatography, Endoscopic Retrograde; D002769:Cholelithiasis / Q000000981:diagnostic imaging / Q000601:surgery; D005260:Female; D005705:Gallbladder Diseases / Q000000981:diagnostic imaging* / Q000601:surgery; D042882:Gallstones / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans
chemical_list: D001466:Barium Sulfate