title: [Ultrasonographic diagnosis of gallstones in the extrahepatic bile duct].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001649:Bile Duct Diseases / Q000175:diagnosis; D002769:Cholelithiasis / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography