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  • Title: Retrospective analysis of 29 patients surgically treated for hepatocellular adenoma or focal nodular hyperplasia.
    Author: Closset J, Veys I, Peny MO, Braude P, Van Gansbeke D, Lambilliotte JP, Gelin M.
    Journal: Hepatogastroenterology; 2000; 47(35):1382-4. PubMed ID: 11100357.
    Abstract:
    BACKGROUND/AIMS: Hepatocellular adenoma resection and focal nodular hyperplasia supervision are widely recognized as the best management when these benign liver tumors are diagnosed. Differential diagnosis is thus mandatory. METHODOLOGY: Twenty-nine patients with a presumed benign liver tumor were retrospectively analyzed. RESULTS: Histopathological analysis of these resected liver tumors demonstrated hepatocellular adenoma in 16 patients and focal nodular hyperplasia in 13. One hepatocellular carcinoma was disclosed into a hepatocellular adenoma and 2 hepatocellular adenoma showed foci of liver-cell dysplasia. Seven patients with hepatocellular adenoma (43%) had evidence of intratumoral hemorrhage, among which 3 patients were admitted with intraperitoneal tumoral rupture. Computed tomography, performed in 26 patients, was the most reliable examination to characterize these presumed benign liver tumors. Magnetic resonance imaging concerned only 5 patients but 3 hepatocellular adenoma and 1 focal nodular hyperplasia were diagnosed. The indications of focal nodular hyperplasia surgical resection were chronic pain (4 pts), hepatocellular adenoma diagnosis (4 pts), undeterminate liver mass (2 pts), a liver mass of unknown origin in patients with a neoplastic history (3 pts). A diagnosis of focal nodular hyperplasia assumed by the imaging work-up was always histologically confirmed. All the patients underwent hepatic resection with no mortality. CONCLUSIONS: This report underlines the risk of hemorrhage or malignant transformation of hepatocellular adenoma that justifies a safety surgical resection. An imaging work-up in favor of focal nodular hyperplasia allows radiological observation.
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