What tests and decisions did you face when cancer returned after radiation?

My cancer has returned after radiation therapy, and my oncology team is discussing several diagnostic tests to figure out the extent of the recurrence and plan next steps. They mentioned tests like PSMA-PET scans to check if it has spread, risk assessment to see how quickly it might progress, and possibly a biopsy. They also brought up watchful waiting as an option, which would mean careful monitoring with regular check-ups instead of immediate treatment. I'd love to hear from others who have been in a similar situation with cancer recurrence after radiation. • What diagnostic tests did you have, and how did that process go for you? • If you chose watchful waiting, what was that experience like and how did you make that decision? In