Focal nodular hyperplasia
Citation, DOI & case data
Right upper abdominal pain.
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A fairly well-defined 6.0 x 5.0 x 5.2cm lesion at segment VIII of liver appearing hypointense on T2WI with central hyperintense scar. The lesion shows intense arterial enhancement with delayed enhancement of the central scar which typical/characteristic feature of fibronodular hyperplasia. The lesion shows persistent enhancement on portal venous phase. No contrast washout. Background liver is non cirrhotic. No features to suggest fibrolamellar HCC or adenoma. No calcification or hemorrhage. No other similar lesion.
No biliary tree dilatation. Gallbladder, CBD, portal vein, hepatic veins, pancreas, spleen and kidneys appear normal. No ascites or lymphadenopathy.
Differential diagnosis are hepatic adenoma, fibrolamellar HCC, hypervascular metastasis and hemangioma.