To compare oncologic outcomes for segmental versus main renal vein invasion (RVI) in patients with renal cell carcinoma.
Patients undergoing extirpative surgery for RCC at our institution from 2003-2013 were stratified into five groups: T2 (n=135), T3a with fat invasion (n=185), T3a with segmental RVI (n=87), T3a with main RVI (n=64), and T3b disease (n=40).