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Focal Nodular Hyperplasia

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As in liver cell adenoma, the cell plates in FNH retain the normal reticulin framework but are slightly thickened (2-3 cell layers). The hepatocytes are relatively uniform with variable cytoplasmic glycogen. The fibrovascular stroma in FNH typically contains a lymphocytic inflammatory infiltrate with occasional neutrophils and/or eosinophils, which are more common around bile ductular structures. Granulomas are rare.

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