You'll need to see a much larger PSA rise to determine its back. Sadly, if (big if) it has returned it will be micro-metastatic and currently we have no curative treatments for that. All treatments will be palliative.
That's the clinical.
However, there are lots of treatments available can keep the PC at bay for years, decades in some cases. Further, it's still speculation that you've got a failure. When to start more treatment will be another huge question. Depending on the doubling time, that could be years before that is needed.
That leaves you in that horrible state of just waiting for the next few PSA tests to see what is really going on. You may have a lab error, slight bounce, or it might go down. PSA is a bit fickle.
Hang in there,
I'll be in the shop.
Age 58, 52 at DX
4.2 10/11, 1.9 6/12, 1.2 12/12, 1.0 5/13, .6 11/13,
.7 5/14, .5 10/14, .5 4/15, .3 10/15, .3 4/16, .4 10/16, .4 5/17, .3 10/17 .3 4/18
2 out of 14 cores positive
Treatment IGRT - 2/2012My latest blog post