title: [Confluence stone].
authors.affiliation: Department of Internal Medicine I, Jikei University School of Medicine, Japan.
authors.forename: I
authors.initials: I
authors.lastname: Takagi
authors.forename: Y
authors.initials: Y
authors.lastname: Shibamoto
authors.forename: G
authors.initials: G
authors.lastname: Toda
mesh_terms: D002769:Cholelithiasis / Q000175:diagnosis / Q000209:etiology; D003135:Common Bile Duct; D003549:Cystic Duct; D003937:Diagnosis, Differential; D006500:Hepatic Duct, Common; D006801:Humans; D011379:Prognosis