No, And I hope not.
From what I understand, PC that's eating away at bone mass would definitely be showing up in PSA tests. But if he is on HT, then I could see bone mass shrinking from that. Also a big change in diet could do that as well. Go see the specialist, but I don't think you will find PCa cell accumulation.
Age 45 (44 when Dx)
Pre-op PSA was 19.8
Surgery on Feb 16, 2007
Post-Op Pathology was poor: Gleason 4+3=7, 4 positive margins, Stage pT3b (Stage III)
HT began in May, '07 with Lupron and Casodex 50mg
IMRT radiation for 38 Treatments ending August 3, '07
My PSA did drop out after surgery to undetectable. It has not returned and I will continue HT until January '08.
My Life is supported very well by family and friends like you all.