Difference between revisions of "Category:Liver - Developmental Pathology"

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== [[Portosystemic Shunt]] ==
 
== [[Portosystemic Shunt]] ==
  
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== Idiopathic noncirrhotic portal hypertension ==
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== [[Portal Hypertension, Idiopathic Noncirrhotic]] ==
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JAVMA paper
 
*Portal hypertension
 
*Sustained impairment of forward venous  flow anywhere along the path from the portal vein to the right side of the heart.
 
*Luminal (thrombosis, parasites) or extraluminal obstruction (hepatic fibrosis or nodular regeneration) or relative restriction of flow due to massive portal volume overload (arterioportal fistulas).
 
*Hepatomegaly associated with posthepatic obstruction
 
*Microhepatica – associated with prehepatic/hepatic causes.
 
*Hepatic encephalopathy and GI bleeding not associated with posthepatic causes.
 
*Most common causes are RHS heart failure and severe diffuse hepatobiliary disease that results in cirrhosis.
 
===Histology===
 
*indistinguishable from microvascular dysplasia or surgically created portosystemic shunts
 
**Portal triad arteriole proliferation
 
**portal veins small to large
 
**variable portal triad fibrosis
 
**hepatic lobule size variation
 
**arterioles scattered throughout hepatic parenchyma
 
**portal veins – small
 
**expanded perivenular connective tissue by arterioles and distended lymphatics.
 
 
[[Category:Liver_-_Pathology]]
 
[[Category:Liver_-_Pathology]]

Revision as of 12:06, 7 June 2010