During the surgery it's possible that some of the prostate tissue is left behind - as David mentions likely around the margins. This means that you'll still get a PSA reading. It's possible some of that might be PC, some of it may not.
It seems like most docs recommend SRT at around .2 but there are a lot of variables to consider - like are you sure it's still in the prostate bed, how fast it's rising, doubling time, post surgery pathology report - stuff like that.
So until you start getting closer to say .1, I'd think you're still in watch and wait mode.
Which is, as we know, an anxiety generator.
Hang in there,
I'll be in the shop.
PSA 4.2 10/11, 1.9 6/12, 1.2 12/12, 1.0 5/13, 0.6 11/13
2 out of 14 cores positive
Treatment IGRT - 2/2012My latest blog post