title: Guest oration: Biliary tract obstruction: new approaches to old problems.
mesh_terms: D000293:Adolescent; D001660:Biliary Tract Diseases / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D002758:Cholangiography; D002779:Cholestasis / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D004724:Endoscopy; D006801:Humans; D010535:Laparoscopy; D008297:Male; D008875:Middle Aged; D010183:Pancreatic Ducts / Q000000981:diagnostic imaging; D014463:Ultrasonography