Is there an age beyond which you will not perform salvage prostate brachytherapy?

No, I don't have an age limit (upper or lower). However, I would always have a discussion with the patient so I understand his concerns and wishes, and I will always make sure he understands his treatment options, pros and cons of any type of treatment. I will also review his medical co-morbidities and help the patient arrive at a realistic expectation and I will also explain the data but at the same time let him know that no one can predict the future with 100% accuracy.