Significance of the nonpassage of radiopaque media through the ampulla of Vater during operative cholangiography.
D014670:Ampulla of Vater / Q000503:physiopathology*; D001660:Biliary Tract Diseases / Q000601:surgery*; D002758:Cholangiography; D003287:Contrast Media; D006801:Humans
D003287:Contrast Media