Letrozole for 10 years? Some research results (also relevant for Survivorship)

I went off Arimidex after 5 years and had a recurrence after 18 months.  Local.  Again. No mets.  Lucky. I am back on Arimidex. And my Oncologist has indicated I will be on it for life. That’s fine. I have to say that apart from my first 6 months on it about 8 years ago, when I had quite bad bone and muscle pain, I haven’t had too many probs.  The pain largely resolved after a few months. Exercise helps immensely.  Interestingly, I expected some pain going back on it after an 18 month break, but there was no issue.