Focal Nodular Hyperplasia : Additional Image

Focal nodular hyperplasia (FNH) of liver has a nodular architecture. The fibrous bands that radiate from the central fibrous zone divide the lesion into incomplete nodules composed of normal hepatocytes. There is some resemblance to cirrhosis. The fibrovascular stroma contains thick-walled dystrophic arteries, bile ductular proliferations, and inflammatory cell infiltrates. FNH lacks normal portal tracts but may contain intermediate- to large-caliber bile ducts within the central fibrous zone.