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“Introduction Renal cell carcinoma (RCC) accounts for 3% of all adult malignancies and is the most lethal urological cancer. It accounted more than 57, 000 new cases and 13, 000 cancer-related deaths in the United States in 2009[1]. In China around 23, 000 new patients with RCC are diagnosed each year, and the incidence is increasing rapidly due to the aging population [2]. Approximately 60% of patients have clinically localized disease at presentation, with the majority undergoing curative nephrectomy. However, metastatic disease recurs in a third of these patients.