Whether it's possible or not, being a doctor, you take an oath. To care for your patient, not to kill them. You take an oath to do things that are proper in the medical world. Not to administer something outside of a hospital setting that's not even your area.
I was hitting .360 when I was diagnosed. I didn't forget how to play while I was recovering. I don't know if the cancer is gone for good. I don't think anyone ever knows, but no one is going to steal my joy for as along as I'm able to play baseball.