portal hypertension: classification

PRESINUSOIDAL

extrahepatic:
- portal vein obstruction (extrinsic compression, phlebitis, OC, coagulopathy, tumor invasion, pancreatitis, neonatal omphalitis)
- dynamic: traumatic/neoplastic arterioportal fistula
- segmental portal HTN: splenic/SMV occlusion
intrahepatic (obstruction of portal venules):
- congenital hepatic fibrosis
- primary biliary cirrhosis
- sarcoid
- myelofibrosis
- schistosomiasis
- idiopathic noncirrhotic fibrosis
- Wilson disease
- reticuloendotheliosis
- Felty syndrome
- chronic malaria
- toxic fibrosis (arsenic, copper, PVC vapors)

SINUSOIDAL

POSTSINUSOIDAL

Yong H. Hahn, MD - 2 February 1995
Last updated: 1 October 2013