[Ultrasonic diagnosis of biliary tract diseases].
D001650:Bile Duct Neoplasms / Q000175:diagnosis; D001660:Biliary Tract Diseases / Q000175:diagnosis*; D002761:Cholangitis / Q000175:diagnosis; D002769:Cholelithiasis / Q000175:diagnosis; D006801:Humans; D014463:Ultrasonography