Obstructions of the bile duct.
D001650:Bile Duct Neoplasms / Q000150:complications / Q000601:surgery; D001652:Bile Ducts / Q000293:injuries / Q000601:surgery; D001660:Biliary Tract Diseases / Q000209:etiology / Q000601:surgery*; D002763:Cholecystectomy / Q000009:adverse effects; D003251:Constriction, Pathologic / Q000209:etiology / Q000601:surgery; D006500:Hepatic Duct, Common / Q000601:surgery; D006801:Humans; D008722:Methods