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Cost-effectiveness of radiofrequency ablation (RFA) was assessed in treatment of hepatocellular carcinoma (HCC).During 5 years, 153 patients with HCC of 3cm or less received RFA, and 60 underwent surgery. Judgment after RFA therapy was classified into three grades: residual tumor (grade 1), necrotic area with a less safety margin of 5mm (grade 2), and necrosis with a safety margin of 5mm in all directions...
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