Radiofrequency ablation of hepatocellular carcinoma: long-term experience with expandable needle electrodes

AJR. American Journal of Roentgenology
Paolo CabassaLaura Romanini

Abstract

Our objective was to determine the efficacy of radiofrequency ablation, using expandable electrodes, in the treatment of patients with hepatocellular carcinoma (HCC). In a 5-year period (1998-2003), 68 HCCs in 59 patients (age range, 47-88 years) were treated percutaneously with radiofrequency ablation using expandable needle electrodes. The mean lesion diameter was 3.1 cm (range, 1-12 cm). Fifty-one of 59 patients were in Child-Pugh class A, and eight were in class B. Follow-up was performed by helical CT at 1, 4, and 6 months and every 6 months after that. The mean follow-up was 24.1 months (range, 6-60 months). Survival and disease-free survival rates were evaluated separately by statistical analysis. Any complications were reported during follow-up. Cumulative survival rates were 94.4%, 65%, and 43.1% at 1, 3, and 5 years, respectively. Median survival time was 23.6 months (range, 4-62 months). Maximum tumor diameter was associated with the probability of survival: 73% among patients with lesion diameters of 3 cm or less, 76.5% among patients with lesion diameters of 3-5 cm, and only 40% among patients with lesion diameters of more than 5 cm (p = 0.05, log-rank test; p = 0.07, Tarone-Ware test). In 34 (57.6%) of 59 patients...Continue Reading

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