If the patient has had prior partial nephrectomy for RCC, would you consider SBRT for a contralateral RCC?

It boils down to the estimated eGFR after SBRT/SABR. Urologists use 15 mL/min as the cut-off. Workup should include a comprehensive metabolic panel and NM renal scan to determine differential renal function. It helps to use a motion dampening technique like abdominal compression or gating to decreas...