肾癌是泌尿系统第二常见的恶性肿瘤,随着影像诊断技术的发展,偶发性肾癌尤其是无症状性肾癌的检出率逐渐增高。大量研究表明,偶发性肾癌的病理学分级较低、分期较早,远处转移的可能性较小[1]。传统的 Renal cancer is the second most common malignant tumor in the urinary system. With the development of diagnostic imaging techniques, the detection rate of sporadic renal cancer, especially asymptomatic renal cancer, has gradually increased. A large number of studies have shown that sporadic renal cell carcinoma of the lower pathological grade, stage earlier, less likely to distant metastasis [1]. traditional