Hello. My 84 year old dad has had chemotherapy for prostate cancer that’s spread to his bones. The chemo hasn’t worked unfortunately and his PSA has been doubling in the last 2 months. he’s now been offered radium 225 to buy him more time. But I want to know how long he has left. I know specifics are difficult without his full medical history. But are we talking 10 years or 10 weeks? I’m really very anxious and it’s do difficult to ask him directly. Kindest regards. Sue