I don't think any of that discussion applies here, and will only confuse the OP.
Evets is asking a completely different question: How much adjuvant ADT do I need with my salvage radiotherapy?
We are waiting for the randomized clinical trial that will answer that question. What we do know now is that 6 months is definitely better than none, and 12 months is probably even better, and that 2 years of Casodex was better than none. Another study found that every extra month of adjuvant ADT was a associated with a 10% reduction of biochemical recurrence. You can read about
this here:Combining Androgen Deprivation Therapy (ADT) and Salvage Radiation Therapy (SRT) improves outcomes
Also take a look at a recent nomogram that shows the probability that SRT will be successful:Probability of remaining recurrence-free after salvage radiation
What I want to call your attention to is the risk factor associated with radiation dose. There was a recent nomogram that allows you to figure out your odds of remaining recurrence free after SRT. From what you've posted, here's how I would calculate your points and probability:
any ADT - 0 pts
Gleason score - 80 pts (tertiary 5 risk is between an GS8 and a GS9)
EPE (no) - 0 pts
negative margins - 37 pts
SVI (yes) - 24 pts
pre-RT PSA (0.05) - 2.5 pts
Radiation dose (<66 Gy) - 17 pts
Total pts= 160.5 - which corresponds to about
a 55% chance it will be successful.
Now your prostate bed radiation dose was only 62 Gy (54 Gy + 8 Gy). This is a very low radiation dose for modern salvage therapy. Your RO may have had some reason for doing this. The reason I raise this issue is that to some extent
adjuvant hormone therapy can probably make up for a deficiency in salvage radiation dose. Because of this, I think you should consider staying on hormone therapy for at least 2 years. You can't stop and restart.
Allen - not an MD
•PSA=7.3, prostate volume=55cc, 8/17 cores G6 5-35% involvement
•SBRT 9 yr onc. results
•SBRT 7 yr QOL results
•treated 10/2010 at age 57 at UCLA,PSA now: 0.2,no lasting urinary, rectal or sexual SEsmy PC blog