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Portal Hypertension

  • Francis Brunelle
  • Danièle Pariente
  • Pierre Chaumont

Abstract

Portal hypertension is defined as elevation of the corrected portal pressure above 10 cm H2O (portal pressure minus IVC pressure) or of the absolute portal pressure above 20 cm H2O. On a practical point of view the portal pressure can be measured by direct transhepatic portography or by splenoportography. The clinical consequence is splenomegaly, the spleen acting as a reservoir for splanchnic venous blood. Development of collaterals between the portal venous system and the caval systemic venous system is common. Some of these collaterals are submucosal in the digestive tract: oesophagus, duodenum and rectum. These collaterals and only these can carry the risk of bleeding. The other collaterals shunt the portal system to the vena cava and rarely lead to portal encephalopathy in children. These collaterals per se are extremely rarely sufficient to allow a normalisation of the portal pressure.

Keywords

Portal Vein Portal Hypertension Hepatic Vein Biliary Atresia Portal Vein Thrombosis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Bibliography

General

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Copyright information

© Springer-Verlag London 1994

Authors and Affiliations

  • Francis Brunelle
    • 1
  • Danièle Pariente
    • 2
  • Pierre Chaumont
    • 2
  1. 1.Service de RadiologieHôpital des Enfants MaladesParis Cedex 15France
  2. 2.Service de RadiopediatrieHôpital de BicetreLe Kremlin BicetreFrance

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