肾癌为我国第二位泌尿系肿瘤。根治性肾切除是目前治疗肾癌最为有效的手段。肾癌早期多无临床症状 ,近一半的肾癌患者首次就诊时即已属晚期 ,约 4 0 %的患者术后复发或转移 ,未接受治疗者 3年生存率低于 5 % ,预后不良[1] 。因此 ,肾癌术后的患者迫切需要有效的全身治疗。肾癌 Renal cancer is the second urological tumor in our country. Radical nephrectomy is the most effective treatment of renal cell carcinoma. More than half of early renal cell carcinoma without clinical symptoms, nearly half of patients with renal cell carcinoma at the time of first visit is already late, about 40% of patients relapsed or transferred after surgery, 3-year survival rate of patients who did not receive less than 5%, poor prognosis [ 1] . Therefore, patients with postoperative renal cell carcinoma urgently need effective systemic therapy. Kidney cancer