Portal hypertension is an increase in the blood pressure within a system of veins called the portal venous system veins coming from the stomach intestine spleen and pancreas merge into the . Portal hypertension occurs when there is an obstruction of blood flow through the liver and pressure rises within the portal vein this obstruction can be intrahepatic intrawithin hepaticliver pre hepatic prebefore or post hepatic postafter intrahepatic causes of portal hypertension. The main cause of portal hypertension is cirrhosisthis is a scarring of the liver it can result from several conditions such as hepatitis an inflammatory disease or alcohol abuse autoimmune . Portal hypertension is an increase in the pressure within the portal vein which carries blood from the digestive organs to the liver the most common cause is cirrhosis of the liver but thrombosis clotting might also be the cause
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