Focal nodular hyperplasia (FNH)
The MRI features are most consistent with focal nodular hyperplasia (FNH).
On imaging the main differential diagnoses include:
-
hepatic adenoma
- usually more heterogeneous on the portal and delayed phases
- no gadoxetate retention on delayed phase MR
- associated with fat, calcification or hemorrhage
-
hypervascular hepatic metastases:
- usually multiple
- patient known for primary cancer
-
hepatocellular carcinoma (HCC)
- usually in cirrhosis patient
- vascular invasion
-
fibrolamellar hepatocellular carcinoma
- radiating/central scar
- calcification more common
- 70% present with metastases
- biliary, vascular, and nodal invasion
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