That really is a great result. I would recommend sending the slides out for a second opinion, and do some studying on Active Surveillance. It is certainly a good suggestion for such a small amount found.
It is important to remember that biopsies can miss the main source of the PSA, particularly if it is in transitional zones. You are only seeing the result of 12 needle sticks. Unless you have an infection of the prostate, 8.5 may be a little high for just a small portion of one core.
I think that certainly for the next 3 to 6 months, while you decide what to do, and get PSA tests every 90 days, that watching it will most likely not cause any negative impact on your ultimate treatment.
Welcome to HW, and good luck as you enter the world of PC.
Age 58, PSA 4.47 Biopsy - 2/12 cores , Gleason 4 + 5 = 9
Da Vinci, Cleveland Clinic 4/14/09 Nerves spared, but carved up a little.
0/23 lymph nodes involved pT3a NO MX
Catheter and 2 stints in ureters for 2 weeks .
Neg Margins, bladder neck negative
Living the Good Life, cancer free 6 week PSA <.03
3 month PSA <.01 (different lab)
5 month PSA <.03 (undetectable)
6 Month PSA <.01
1 pad a day, no progress on ED. Trimix injection
No pads, 1/1/10, 9 month PSA < .01
1 year psa (364 days) .01
15 month PSA <.01