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Focal Nodular Hyperplasia

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Comments:
The hepatocytes in FNH show variable cytoplasmic glycogenation. Large, thick-walled vessels surrounded by connective tissue favor FNH over liver cell adenoma, which has thin-walled vessels and scant perivascular connective tissue stroma. The fibrovascular stroma in FNH often contains a lymphocytic infiltrate with occasional neutrophils and/or eosinophils, which are more common around bile ductular structures. Granulomas are rare.

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