On Cancer: Meet Urologic Cancer Surgeon Guido Dalbagni

I have ureteral cancer, a stent in my left kidney, and a nephrostomy bag. I have undergone 8 months of chemo. It stopped the cancer from spreading, but the tumor has grown. I recently consulted with Dr John Colberg at Yale Smilow Cancer Center, who feels that my best solution would be radical surgery including left kidney and ureter. My question is : is there any alternative? I'm 85 years old and have been advised surgery may be too risky. I've heard of Nano knife electrical therapy -- it sounds like a possibility, less invasive, and easier on the body. I would appreciate any suggestions. Thanks much!