When (if ever) would you offer radiotherapy for renal cell carcinoma following nephrectomy?  

There is no indication for any type of radiation after nephrectomy in resected RCC. Often a 'positive' renal vein margin is not a true positive, but rather an artifact of having a renal vein thrombus and this should be discuss with the Urologist and Pathologist and clarified in the report. Having sa...

I'm not aware of any data in RCC that adjuvant XRT is useful.