Computed Tomography of Benign Hepatic Tumors

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Abstract
Computed tomography (CT) was performed on 5 patients with focal benign liver lesions: 2 cases of focal nodular hyperplasia (FNH) and 3 cases of hepatic adenoma (HA). All 5 patients had lower density lesions seen best on noncontrast scans. Focal nodular hyperplasia often presents as an asymptomatic, well circumscribed lesion with a central, stellate, fibrous scar. Hepatic adenoma, which is associated with the use of oral contraceptives, is a smooth bordered mass that exhibited foci of hemorrhage in 2 of 3 cases. Both of these benign liver lesions enhance to a variable degree following i.v. contrast medium administration. A specific diagnosis of FNH or HA may be suggested when appropriate CT findings are detected.