I don't know if this will help you or increase your worries more. If you have a biopsy, you stand a good chance of finding something because a lot of men have a trace of cancer by this age. What is unknown is whether you should do something about it, because in many cases it will be slow growing and you will shake off these mortal coils from some other cause at a ripe old age. The Gleason score provides some information, but most men end up with a 6 or 7, which doesn't fully answer the question because it is midrange.
I also had a slight abnormality in a DRE, so I had a biopsy (and by the way, if you have a biopsy, ask how many cores they are going to do, 6 was old thinking and nowdays 12 up to 18 is thought to be better. The more the better chance of finding something if it is present, like 'searching for the seeds in a strawberry' is how I heard it described.). The abnormality turned out to be nothing, but to make a long story short they found a trace (less than 5% on one core out of 18) of possible cancer (2 out of 3 pathologist's opinions). I eventually went the route of robotic prostatectomy, and am 'on the other side' with little after effects except still waiting for my sex life to pick up more (but it is headed up). My post operation pathology report still showed very very little involvement.
Would I change what I did? Probably not. But like other replies, I don't think what I faced is in the same category as a woman facing breast cancer. I think I got caught by the improved early detection systems, and that the concern to me was not whether I would die, but whether I would have the same quality of life (sex and incontinence issues, as you'll read about here).
The past is gone, the future yet to come. This moment, here and now, is nothing less than the totality of existence. I can't control my life, but I can shape this moment.
PSAs 1.6, 1.8, 2.0 at yearly intervals, mild DRE finding (hindsight unrelated) lead to biopsy
3/08 1st biopsy, 18 core. Pathologist 1, HPIN and ASAP, 0.5mm 1 core. Pathologist 2, carcinoma
7/08 2nd biopsy, 16 core. Pathologist 1, 1 core carcinoma. Pathologist 3, 3 cores carcinoma
12/22/08, Davinci at U of Washington hospital, Dr. William Ellis, 6 hr procedure, both nerves spared.
12/31/08 catheter out, dry immediately
Final path report:
79 g prostate gland
<5% cancerous, bilateral, T2c, Gleason 3+4, margins & seminal vessels clear, 14 lymph nodes negative
ED - some nocturnal erections even with catheter. 1st orgasm at two week mark. 50% erect.
1/10/09 - Lymphocele post-surgery complication. Kidneys threatened. 2 days hospital, drain installed.
1/22/09 - Drain blocked, CAT scan, repositioned, continue drain
2/10/09 - The lymphocele drain comes out.