自80年代以后，由干医疗设备的不断更新及技术进步，肾癌的早期诊断率有明显的提高：在几组病例的回顾性分析中，确诊前的病程有所缩短；肾实质癌在肾肿瘤收治数中的比例增加了1倍；术前的临床分期，I、II期者高达65％～84％o对肾脏无症状或只显某项肾外症状的肾癌，作出筛选性 Since the 1980s, due to the continuous update of medical equipment and advances in technology, the early diagnosis rate of renal cancer has been significantly improved. In the retrospective analysis of several groups of patients, the course of disease before diagnosis was somewhat shortened. The number of tumors in the number of increased 1-fold; preoperative clinical stage, I, II as high as 65% to 84% o renal asymptomatic or only showed some extra-renal symptoms of renal cancer, made of screening