ABSTRACT
Intrinsic vascular disease or extrinsic vascular compression can cause obstruction of the extra-or intrahepatic portal or hepatic venous systems. Ultrasound is used to assess vascular changes, plan for interventional treatment and perform surveillance in patients with clinical features of chronic hepatic or splenic disease. Other investigations that may be required are endoscopy, transjugular measurement of the hepatic venous pressure gradient, transjugular or percutaneous liver biopsy under ultrasound guidance, computed tomography (CT), magnetic resonance imaging (MRI) and angiography.
