肾癌容易发生肾静脉和下腔静脉内癌栓，近年认为如未发现局部或远处转移，肾癌根治性切除时同时切除肾静脉内癌栓和取出下腔静脉内癌栓，预后仍然良好［1］。1临床资料1．1一股资料本组4例肾癌下腔静脉癌栓占（IVC）同期肾癌（54例）的743％。4例均为男性，年龄在36～52岁，平 Renal cancer prone to renal vein and invaginal tumor thrombus, in recent years that if no local or distant metastases were found, radical resection of renal cell carcinoma at the same time remove the renal vein tumor thrombus and remove the inferior vena cava tumor thrombus, the prognosis is still good [1]. 1 clinical data 1.1 a group of information in this group 4 cases of renal cell carcinoma of the inferior vena cava thrombosis accounting for (IVC) simultaneous renal cell carcinoma (54 cases) of 743%. 4 cases were men, aged 36 to 52 years old, flat