[Contribution to the study of benign tumors of Vater's ampulla].
D014670:Ampulla of Vater / Q000473:pathology*; D001650:Bile Duct Neoplasms / Q000473:pathology*; D002758:Cholangiography; D006801:Humans; D008297:Male; D008875:Middle Aged
Contribución al estudio de los tumores benignos de la papila de Vater.