Hepatocellular adenoma (HCA) is an uncommon benign tumor with risk for tumoral hemorrhage and malignant transformation. At least four HCA subtypes have been described: Inflammatory (I-HCA); hepatocyte nuclear factor 1-α mutated (H-HCA); β-catenin (B-HCA); and unclassified (U-HCA). I-HCA has the highest risk for tumoral hemorrhage, whereas B-HCA is the most likely to undergo malignant transformation. Clinical management differs for HCA subtypes, based on their different level of risk for complications. This study examines the image findings of pathologically proven HCAs from our institution on gadoxetic acid-enhanced MRI, in order to describe association between MRI image findings with HCA subtypes.
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