In cirrhotic portal hypertension, in order to return the stagnant blood in the portal system, a large number of these traffic branches are opened and the dilated or varicose veins anastomose with the veins of the body circulation to establish the collateral circulation, so that the portal blood can return to the right heart without passing through the liver. What are the reasons for the formation of portal collateral circulation? The establishment and opening of portal collateral circulation is a unique manifestation of portal hypertension, which is not only an important basis for the diagnosis of portal hypertension, but also has important clinical significance. 1.Hemorrhage Hemorrhage is caused by the rupture of varicose veins formed by portal collateral circulation, which is a serious complication. 2, portal shunt encephalopathy There are 10% to 20% of patients with cirrhosis medical|education.com finishing, hepatocyte compensatory function is still good, but the toxic substances produced by the intestine without liver metabolism, through the extrahepatic portal collateral circulation shunt directly into the body circulation, causing spontaneous portal shunt encephalopathy, is a type of hepatic encephalopathy, the patient mostly after the intake of large amounts of protein neuropsychiatric symptoms, limit protein intake The condition can often be relieved by itself. 3, abdominal wall and umbilical varicose veins abdominal wall varicose veins can be significant in the shape of sea serpent head called jellyfish head sign. Tremors can be palpated or murmurs can be heard along the veins, which is called K-Bau syndrome.