Fig. 2From: Pulmonary arterial hypertension caused by congenital extrahepatic portocaval shunt: a case reportAbdominal ultrasonography shows that the intrahepatic PV system is absent (arrows) (a), and the SPV is tortuous and dilated (b). PV: portal vein; HA: hepatic artery; SP: spleen; SPV: splenic veinBack to article page