肝腫瘍に対するラジオ波肝焼灼術（RFA）の治療成績

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Purpose : Radiofrequency Ablation (RFA) for liver tumor is remarkably spreading as alternative therapeutic option. However, the efficacy and long-term results are unknown. We have evaluated our experiences of RFA in 63 patients of hepatocellular carcinoma (HCC) and metastatic liver tumor (MLT) from August 2000 to June 2004.Methods : We performed RFA under general anesthesia with Cool-tipTM System (RADIONICSTM). The approach and position depends on the tumor location.Results : Percutaneous RFA was performed in 42 patients and laparotomy RFA in 9. Hepatectomy was done simultaneous in 6 cases and another operation such as gastrectomy in 9. Mean observative period was 18.0 months. Local recurrence rate was 17.9% and 33.3%, repectively. One-and 2-year survival ratio of HCC were 94.0% and 76.0%. And also in case of MLT were 90.4% and 72.0%, respectively. The incidence of major complication was liver infarction in one case.Conclusion : RFA therapy is feasible and valuable therapy for HCC and MLT. To decrease recurrence, refinement of procedures and instruments should be required.