Abstract
We report two cases of transitional cell carcinoma (TCC) of the right kidney with extension into renal vein and inferior vena cava (IVC). Based on radiological findings, the patients were diagnosed having renal cell carcinoma with tumor thrombus in the vena cava pre-preoperatively. Radical nephrectomy with thrombectomy was performed. A literature review of 18 reported cases revealed that 14 cases (77.8%) were diagnosed as renal cell carcinoma preoperatively. TCC should be included in the differential diagnosis of renal tumors that can cause IVC thrombosis. Prognosis of TCC with vena cava thrombus is relatively poor compared to that of renal cell carcinoma with a large vein tumor thrombus.