Portal vein thrombosis

Portal vein thrombosis (PT) can occur in any segment of the portal vein, and refers to thrombosis in the portal vein trunk, superior mesenteric vein, sub- mesenteric vein, or splenic vein. Portal vein thrombosis can cause portal vein obstruction, cause portal vein pressure increase, and intestinal congestion. It is the main disease leading to extrahepatic portal hypertension. Clinically rare. In recent years, with the widespread application of color Doppler and the improvement of the diagnosis level, the number of case reports is increasing day by day. The etiology may be related to systemic or local infection and portal vein congestion. The cause is not found in more than half of the cases. Portal vein thrombosis is divided into primary and secondary, which can be divided into intrahepatic and extrahepatic according to the location, and can be divided into acute and chronic according to the incidence. Clinically, secondary portal vein thrombosis is relatively common, and mostly secondary to chronic Liver and tumor diseases, extrahepatic portal vein obstruction are mostly secondary to intrahepatic portal hypertension. The clinical manifestations are mainly abdominal pain, the severity of which depends on the site of thrombosis, urgency, extent and degree of embolism. The most prominent symptom of simple extrahepatic portal vein occlusion is bleeding from esophageal gastric fundus. Because this disease has no characteristic manifestations, it is easily misdiagnosed clinically.

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