I know the feeling having been diagnosed with a malignant lesion on left kidney March of 2023. Urologist said that the only option was total nephrectomy followed by other treatments. Because of my age - - 81 at the time - - I opted out after considering all things. I was referred to oncologist who put me on Keytruda 21 months ago with 19 infusions to date. Last CT scan a few months ago showed to spread of cancer, and the lesion was no longer visible. I have had side effects which I will not go into, but with my appointment this Monday I am considering stopping since a more serious side effect has come up. But for the past couple of years I have been able to live an ordinary everyday life taking part in normal activities including driving. I know this is a difficult and personal decision that only you can make after carefully researching with you medical team all of your options. I wish you well.