Initial Experience of Radiofrequency Ablation of Renal Tumor

Purpose: We wanted to report the our early experience with performing nephron-sparing radiofrequency ablation (RFA) of renal tumor. Materials and Methods: Three percutaneous RFAs were performed under combined computed tomography (CT) and ultrasonogram guided, and two intraoperative ultrasonograpy-guided laparoscopic RFAs were per-formed since June 2004. The treatment indications were localized, small (＜4cm), solid renal masses in elderly patients and also the same type masses in the patients with comorbid conditions. The follow-up studies included physical examination, CBC, serum creatinine, urine analysis and kidney CT, and these were performed at day 1, 1 week, 1 month, 3 months, 6 months and 1 year after ablation, and then semi-annually thereafter. The mean follow-up duration was 8.8 months (range: 5-12 months). Results: All five patients underwent successful RFA without any serious events. One patient had a mild perinephric hematoma and another patients had mild gross hematuria postoperatively. With a mean follow-up of 8.