title: Asymptomatic membranous obstruction of the inferior vena cava due to large intrahepatic collaterals.
abstract: This paper presents a case of asymptomatic membranous obstruction of the inferior vena cava with a rare hemodynamic pattern consisting of large intrahepatic venous connections between the right inframembranous and the middle supramembranous hepatic vein. These remarkably large collaterals obviated significant enlargement of the azygous venous system and the development of a Budd-Chiari syndrome.
authors.affiliation: Department of Radiology, Okayama University Medical School, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Akaki
authors.forename: S
authors.initials: S
authors.lastname: Kanazawa
authors.forename: A
authors.initials: A
authors.lastname: Gochi
authors.forename: K
authors.initials: K
authors.lastname: Nakamura
authors.forename: K
authors.initials: K
authors.lastname: Yasui
authors.forename: I
authors.initials: I
authors.lastname: Togami
authors.forename: Y
authors.initials: Y
authors.lastname: Hiraki
authors.forename: K
authors.initials: K
authors.lastname: Hamazaki
mesh_terms: D000368:Aged; D006502:Budd-Chiari Syndrome / Q000209:etiology; D003097:Collateral Circulation / Q000502:physiology*; D003251:Constriction, Pathologic / Q000000981:diagnostic imaging / Q000209:etiology / Q000503:physiopathology; D006503:Hepatic Veins / Q000503:physiopathology*; D006801:Humans; D008099:Liver / Q000098:blood supply*; D008102:Liver Circulation / Q000502:physiology; D008297:Male; D011859:Radiography; D014682:Vena Cava, Inferior