Would you offer salvage RT to a patient with adverse features after prostatectomy if his post-operative PSA was highly elevated (for example >10 ng/mL), but his metastatic work-up was negative?

The benefit in a patient like this with salvage RT is very limited if at all and I would not offer RT. This persistent elevation of more than 10 after surgery is from occut metastatic disease and local RT would not help with the outcome. Ga68 PSMA PET if available may pick up some of the disease tha...