Question

Cavernous transformation of the portal vein is

a) thrombus in the intrahepatic portosystemic veins
b) thrombus in the extrahepatic portosystemic veins
c) obstruction of the hepatic veins
d) obstruction of the inferior vena cava

Answer 1

Cavernous transformation of the portal vein is the formation of collateral vessels (portosystemic shunts) due to obstruction of the portal vein. In cirrhosis, scarring within the liver obstructs the passage of blood through the liver, causing portal hypertension. As a result, blood from the intestines bypasses the liver and returns to the heart through alternative routes, such as the intrahepatic and extrahepatic portosystemic veins.

Step-by-step explanation:

Cavernous transformation of the portal vein is the formation of collateral vessels (portosystemic shunts) due to obstruction of the portal vein. In cirrhosis, scarring within the liver obstructs the passage of blood through the liver, causing portal hypertension. As a result, blood from the intestines bypasses the liver and returns to the heart through alternative routes, such as the intrahepatic and extrahepatic portosystemic veins.