I've been dealing with a situation that is much like your husband's. I had a follow up bone scan after surgery and it came back with 2 different palces that were considered consistent with metastasis. That bone scan was done in September of 08 since then I have seen two very distinguished Prostate oncologists and they both say the same thing. "I can guaruntee you that you don't have prostate cancer but I can't guaruntee you that you don't have cancer". My PSA is undetectable and has been since my surgery in June of 08.
There are a few types of prostate cancer that generate very little PSA but that should have been seen when the pathology was done after the surgery. Also if your husbands testosterone count is normal it is highly unlikely it is prostate cancer that is causing the problem.
The reason my doctor's havent done a biopsy on the places that "lit up" is they don't show as lesions on CT scans and its possible that the biopsy would miss the spot it needs to hit.
I have done a few other things like get a colonoscopy and had a dermatologist check me from head to foot for any type of skin cancer or such.
Does your husbad have constant pain in any of the areas that lit up, if so that could be troubling. Don't just concentrate on the prostate thing look everywhere.
Finally, ther are false positives that show on bone scans also but follow up CT's or MRI's should rule this out.
Biopsy- 12 cores, 4 positive highest 4+4=8
Bone scan, CT scan and Chest X-ray clear 4/16/08
Urologist suggested surgery 4/16/08
MRI on 4/24/08 clear no suggestion of lymph node involvement.
4/24/08 -Started on Lupron and Casodex preparing for HDRT and IMRT in late July. This treatment will not preclude me from surgery if I change my mind.
Decide to have DaVinci surgery after another consult with surgeon.
6/19/08- DaVinci surgery at University of Washington.
6/25/08- Path report, clear margins, no noted extension
9/12/08- PSA <0.02
12/05/08-PSA <0.02 Six months after surgery