My father has grade 3 (pT2 a) bladder cancer, we found out a year ago, he refused treatment and still is, I’ve been reading about the stages and the survival rates, and i found a chart talking about a 5 years survival rate, yet, this was for people who got treatment or went through a surgery, now what would be my father’s survival rate with no treatment ? 

I would really need to know.

PS: My father also suffers heart and pressure problems and also refuses treatment.