On my mind

I had a radical left nephrechtomy on 11/27/17.  The mass was 2.5 cm stage t3a grade 2.  No lymph nodes involved , clear margins.  My Dr.felt first scan in july, six months after surgery was right for my situation.  It was stage t3a because the tumor was located in the renal sinus.  I hope he's right-what do you think?