Distinguishing Cirrhosis from Budd-Chiari Syndrome

Diagnostic Approach

The American Association for the Study of Liver Diseases recommends Doppler ultrasound as the first-line study for diagnosing Budd-Chiari syndrome, with diagnostic sensitivity exceeding 75% 3
Doppler ultrasound can reveal intrahepatic or subcapsular hepatic venous collaterals in over 80% of Budd-Chiari syndrome cases, which is a distinctive feature separating it from cirrhosis 1, 2
The presence of hepatic vein abnormalities, such as absent flow signals, reversed flow, turbulent flow, or a hyperechoic cord replacing normal veins, can indicate Budd-Chiari syndrome 4, 1

MRI with gadolinium contrast can visualize obstructed hepatic veins and IVC, intrahepatic collaterals, and spider-web network patterns, and demonstrate a characteristic perfusion pattern 4, 1
CT scan has high false positive and indeterminate results, approximately 50% of cases, and is less reliable as a sole diagnostic tool 1, 2

Liver biopsy findings in Budd-Chiari syndrome include centrilobular congestion, liver cell loss, and fibrosis, with considerable sample variation from one area to another 4, 1
Central-to-central fibrosis develops in areas of bridging necrosis, and thrombosis of intrahepatic portal veins is common in advanced cases 4, 1

The presence of hypercoagulable states, such as myeloproliferative neoplasms, Factor V Leiden, protein C/S deficiency, antithrombin deficiency, or prothrombin G20210A mutation, can favor Budd-Chiari syndrome over other causes of cirrhosis 5
Intractable ascites disproportionate to degree of hepatic dysfunction and post-sinusoidal portal hypertension pattern with relatively preserved liver parenchyma initially can also suggest Budd-Chiari syndrome 5