Portal hypertension resulted from paroxysmal nocturnal hemoglobinuria: a case report and review of literature.

Paroxysmal nocturnal hemoglobinuria is a rare intravascular hemolytic anemia, and thrombosis is the leading cause of mortality rate. The hepatic veins is the common site where Budd-Chiari syndrome usually occurs. We confronted a patient who simultaneously happened to have portal vein and superior mesenteric vein thrombosis leading to prehepatic portal hypertension and upper gastrointestinal bleeding. Percutaneous thrombolysis is an efficacious treatment.