Computed tomography of benign hepatic tumors

Area of Science:

• Radiology
• Hepatology
• Medical Imaging

Background:

• Distinguishing between focal nodular hyperplasia (FNH) and hepatic adenoma (HA) is crucial for managing benign liver lesions.
• Computed tomography (CT) is a key imaging modality for evaluating liver abnormalities.

Observation:

• Five patients with focal benign liver lesions (two FNH, three HA) underwent CT.
• Low-density lesions, best visualized on noncontrast scans, were observed in all patients.
• FNH lesions were well-circumscribed with a central scar; HA lesions had smooth borders and occasional hemorrhage.

Findings:

• Both FNH and HA demonstrated variable enhancement after intravenous contrast administration.
• Distinctive features, such as a central scar in FNH and hemorrhage in HA, were noted.
• CT findings suggest a potential for specific diagnosis of FNH or HA.

Implications:

• Accurate CT interpretation can guide the diagnosis of focal benign liver lesions.
• This imaging approach may reduce the need for invasive procedures.
• Understanding CT characteristics aids in clinical management of FNH and HA.