What r the chances of getting back renal cell carcinoma for an old male (63 yrs) after being cured by nephrectomy & taking nexavar (sorafenib) ?

It depends: This is not an easy answer, because it depends upon the stage of your original tumor and your surgical pathology. I would ask this question of your urologist or oncologist, who know the specifics of your case.

Kidney cancer is: Old and wise, known for ability to recur/relapse late. Sorafenib and other tyrosine kinase vasculature inhibiting drugs are new and don't know everything.Kidney cancers can relapse on meds, even late.