[Ultrasonographic diagnosis of carcinoma of extrahepatic bile duct].
D000328:Adult; D000368:Aged; D001650:Bile Duct Neoplasms / Q000175:diagnosis*; D001651:Cholestasis, Extrahepatic / Q000175:diagnosis; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography