Radical Nephrectomy in Renal Cell Carcinoma with Venous Tumoral Thrombus: Long-term Outcomes and Overall Survival

Objective To describe the five-year overall survival (OS) and perioperative morbidity of patients with renal cell carcinoma (RCC) with venous tumor thrombus (VTT) treated through radical nephrectomy and thrombectomy. Materials and Methods We evaluated a cohort of 530 patients with a diagnosis of RCC from January 2009 to December 2019, and found VTT in 42 of them; these 42 patients composed the study sample. The patients were stratified according to the Neves Thrombus Classification (NTC). The baseline and perioperative characteristics, as well as the follow-up, were described. The Kaplan-Meier curve and its respective Cox regression were applied to present the 5-year OS and the OS stratified by the NTC. Results The average age of the sample was of 63.19 ± 10.7 years, and there were no differences regarding gender. In total, VTT was present in 7.9% of the patients. According to the NTC, 30.9% of the cases corresponded to level I, 21.4%, to level II, 26.1%, to level III, and 21.4%, to level IV. The 5-year OS was of 88%. For level-I and level-II patients, the 5-year OS was of 100%, and of only 38% among level-IV patients. Complications, mostly minor, occurred in 57% of the cases. Conclusions Radical nephrectomy with thrombectomy is a morbid procedure; however, most complications are minor, and the five-year mortality is null for patients in NTC levels I and II, and low for levels III and IV, and it may be even lower in level-III patients when standardizing transesophageal echocardiogram intraoperatively and routinary extracorporeal bypass. Thus, we recommend considering this surgery as the first-line management in patients with RCC and VTT.