A case of focal nodular hyperplasia of the liver

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Abstract
Focal nodular hyperplasia of the liver is a rare benign tumor of unknown etiology. Presented here is a case of focal nodular hyperplasia of the liver in a 19-year-old man with asymptomatic hepatomegaly. Liver scan and selective hepatic angiography revealed a tumor mass, which was indistinguishable from a malignant tumor. At laparotomy a large mass measured 16 x 10 x 4 cm and weighed 480 gm arising from a part of the left hepatic lobe and extending down to the abdominal cavity was found. The gross and microscopic findings established the diagnosis of focal nodular hyperplasia of the liver. The clinical, radiological and pathological findings in the patient are described in detail.