@jeffmarc Yes, those “metasti-seeds” (as Kwon sometimes refers to them) can be anywhere in the body.

But, Kwon cautions in that presentation that “…only 1/3 of men who have recurrence following prostatectomy have recurrence only in the prostate bed, and that they should not get salvage radiation there unless they’re absolutely certain of the location of recurrence.” He says to “first confirm where the recurrence is.”