[Clinical analysis of renal cell carcinoma with intravenous tumor thrombus].

We reviewed treatment and prognosis in 7 operative and 7 non-operative cases of renal cell carcinoma with venous tumor thrombosis formation, 14 cases in total. Treatment after around 1983 involved the use of biological response modifier (BRM), chiefly interferon (IFN), and operation by thoracoabdominal approach. Before that, chemotherapy, radiotherapy and operation by peritoneal approach were used, with many cases judged inoperable. Even in non-operative cases, life-prolongation was frequently achieved by embolization of the renal artery and administration of various BRMs. On the other hand, in cases judged operable which were always treated by resection, early postoperative death sometimes occurred. These facts brought home to us the difficulty of choosing appropriate treatment. Though it is hard to determine the relative merits of various treatments from the present data, since the series is small and contains cases from 1963 onwards, the clinical and pathological pictures should be carefully evaluated for each case, and the most suitable course of treatment should be selected individually. We describe a non-operative case in which a combined use of embolization, IFN-gamma and tumor necrosis factor (TNF) elicited a lasting partial response, and an operative case in which postoperative complications such as pulmonary infarction and renal failure occurred after operation under extracorporeal circulation and patient died at 2 months after operation.