Letrozole - How long is too long?

Hi @ SueP I had a phone consult with oncologist this afternoon.  I am on Letrozole.   He said there have been a few studies showing there is not much benefit from 7 years onwards to 10 years.  He said studies have shown 7 years is now a good indicator to stop.  I have been taking it for 2 years and he told me to keep going so Im hoping its only another 5 years now.