Renal cell carcinoma (RCC) is the commonest primary tumor of the kidney which may invade through the renal vein into the inferior vena cava (IVC), and then it can extend intraluminally with subsequent tumor-thrombus formation. Here we report a case involving excision of a primary RCC with tumor-thrombus involving IVC up to right atrium with the use of extracorporeal circulation. Single stage surgical procedure was performed in collaboration with a urological team aiming complete resection of primary tumor, para-aortic lymphadenectomy and removal of IVC thrombus extending to right atrium with the help of cardiopulmonary bypass. After arresting heart, RA was opened and the mass was removed through RA from IVC and hepatic vein level. Abdominal IVC was opened and the entire residual mass was removed from below also small amount of thrombus removed from left renal vein. Postoperative venous doppler showed no residual thrombus in venous system. Histopathology report confirmed papillary renal cell carcinoma. The patient was discharged from hospital in the 12th post-operative day without any complication.J Bangladesh Coll Phys Surg 2018; 36(2): 77-79