Not to frighten you, but I'm on the "other" side. Namely, I had only one positive core on the left side, but after my laproscopic prostatecomy the pathology report showed positive margins and capsular penetration on the right side, where the cores were clear. (The DRE's were always negative.) Talk about a jaw dropper - I hoped that they had someone elses report! I'm currently waiting for my first PSA test on 3/13, hoping and praying that it will be 0 and that they got it all. However, I realize I may have more treatments in store, and many postings on this site have encouraged me.
I can't give you advice on what to do, only a case where a supposed very minimal amount of cancer turned out more than expected. That's one reason I'm glad that prostate is sitting in a jar of formaldeheide somewhere.
PSA 4.7 (up from 3.2 one year ago)
Biopsy November 8, 2006
1 of 10 cores positive 5%
2 others questionable (small gland proliferation)
Robotic surgery scheduled January 19, 2007