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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