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Radiology. 1993 Feb;186(2):553-6.

Hepatocellular carcinoma: CT appearance after percutaneous ethanol ablation therapy. Work in progress.

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  • 1Department of Radiology, Emory University School of Medicine, Atlanta, GA 30322.


Nine patients with biopsy-proved hepatocellular carcinoma underwent percutaneous ethanol ablation therapy (PEAT) with computed tomographic (CT) guidance. Twenty-five ablation sessions were performed in nine lesions ranging in size from 1.8 to 6.5 cm. Repeat biopsy was performed in seven of those nine lesions between 1 and 2 months after completion of therapy. CT scans obtained immediately after ablation demonstrated a necrotic area equal in size to the target lesion in five patients; four of those five patients have had negative findings at biopsy and are free of known disease. None of the patients with CT evidence of limited necrosis are currently free of disease. Peripheral nodularity was demonstrated after ablation in three patients at CT; none are free of disease. All four patients in whom there was no peripheral nodularity are free of known disease. Thus, CT evidence of necrosis and lack of nodularity immediately after PEAT are suggestive of absence of disease.

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