Haven't been on this site for awhile, saw this post and have the same 'how long" questions. Initially Stage 2 lobular, oestrogen pos in May 2009. Now Stage 4 bone and liver mets, January 2015, Onc said average is 5yrs. Have been on Letrozole since with monthly xgeva for bones, have booked a holiday for next year, but am extremely anxious that something could happen beforehand. Have been stable since being on Letrezole, nearly 2 years, but know it cant last for ever, how long can I expect to get out of Letrozole, only need to get another 9 months to get through my holiday, am I asking too much??? Can anyone advise me?