I had my first recurrence about 4.5 years after the initial treatments. My PSA was 30 and gleason scores were 8 and 9's.
Treatments, in order, I received them.
ADT for 12 months, followed by 28 seasons of radiation therapy and last but not least was brachytherapy.

At 4.5 years my PSA went from .2 to 2.9 in 6 months, psadt of 1.6 months.

A PSMA/PET scan showed metastatic PC of the right common iliac lymph node.

Treatment was 42 sessions of Radiotherapy. Initial psa after treatment was .1. 6 months later psa was 1. My next psa test, 4 months later, was 3.5.

I have an appointment with my urologist tomorrow to see what's next.