title: [Portal hypertension of extrahepatic origin].
abstract: Portal hypertension may be due to a suprahepatic or infrahepatic block. Suprahepatic blocks result in Budd-Chiari syndrome. Their principal cause is myeloproliferative syndromes and invasion of the hepatic veins by a tumour. Their main manifestations are ascites and liver enlargement. Treatment consists of re-establishing the hepatofugal drainage. Infrahepatic blocks are due to obstruction of the portal vein, either by thrombosis facilitated by thrombogenic diseases, or by a tumour. Their main consequences are gastrointestinal hemorrhages. Treatment consists of preventing the rupture of oesophageal varices.
authors.affiliation: Service d'hépato-gastroentérologie, groupe hospitalier Pitié-Salpêtrière, Paris.
authors.forename: D
authors.initials: D
authors.lastname: Valla
mesh_terms: D006502:Budd-Chiari Syndrome / Q000209:etiology; D006503:Hepatic Veins; D006504:Hepatic Veno-Occlusive Disease / Q000150:complications*; D006801:Humans; D006975:Hypertension, Portal / Q000209:etiology*; D011169:Portal Vein
vernacular_title: L'hypertension portale d'origine extrahépatique.