Alternatives include nephron-sparing surgical resection, laparoscopic partial nephrectomy, laparoscopic cryoablation, percutaneous radiofrequency (RF) ablation, and percutaneous cryoablation. Although investigators have reported the successful treatment of solid renal tumors with percutaneous RF ablation [Farrell&Gervais; 2003].Intraoperative approaches and percutaneous approaches with MR imaging guidance have been described [Cestari & Moon; 2004].