I am not a medical person, but I do know that the mother of a priest from a neighboring parish had bone cancer for quite a long time. I knew him for about 4 years when he went to another diocese job last year. The only indication that there was anything going on with this woman was a limp. She was probably in her 70s. There was no holding her back. I have not heard that she has passed, so believe she is still going strong. Try not to listen to negative information and keep a positive attitude. As a BC survivor twice, I know how scary it all is. Don’t listen to negativity from anyone. Good luck.