You can learn a lot just by reading past threads here on HealingWell.
Sorry to hear about
your biopsy result, but one sample (out of 12?) generally represents a small volume of cancer.
Did they share with you the Gleason score? Factors that can affect your future action (or lack of action) will include the
location of the cancer, its Gleason score, its volume, family history, and so forth.
Looking back, and putting the terror aside that usually is part of the initial reaction to a cancer diagnosis, if I had one core positive and a Gleason 6 tumor grade, I would get a second opinion on the biopsy to confirm that, and I would have to be forcibly convinced that the right course of action would be anything other than Active Surveillance.
A lot of recent threads here have dealt with choosing the best course of action after a postive biopsy. There are no easy answers, and there generally is no one "right" answer. Read, read, read, and go slowly. You only get one shot at doing the right and smart thing. Good luck to you. I think I would call his office and tell them you would like to know your Gleason score now, rather than later.
It's highly, highly unlikely that anything will show up on your bone scan or the CT scan (except old injuries, arthrites, disc degeneration, and other roadmaps of age).
As you can see in my "signature," my stats were significantly more serious than yours, so my options were much more limited.
It would also be helpful if you would tell us your age.