Extrahepatic Portal Vein Obstruction: Recent Portal Vein Thrombosis and Portal Cavernoma in the Absence of Cirrhosis

Abstract

CT scan Computerized tomography scan DOACS Direct oral anticoagulants EHPVO Extrahepatic portal vein obstruction HCC Hepatocellular carcinoma HCA Hepatic cell adenoma MPN Myeloproliferative neoplasm MRI Magnetic resonance imaging SIRS Systemic inflammatory response syndrome TIPS Transjugular porto systemic shunt PSVD Porto sinusoidal vascular disease Definition and Epidemiology of Recent (or Acute) and Chronic Extrahepatic Portal Vein Obstruction Extrahepatic portal vein obstruction (EHPVO) is the obstruction of the extrahepatic portal vein, and/or right or left branches, associated or not to obstruction of other segments of the splanchnic venous axis. It does not include isolated thrombosis of the splenic or superior mesenteric veins. EHPVO secondary to malignant tumor (frequently but improperly referred to as malignant thrombosis) is considered as a