It is discussion you need to have with oncologist, but at end, it is your decision. The percent of recurrence with and without AI will depend on type cancer, prior treatment and genetics.

I am 65, had stage II breast cancer (one breast / 2 lymph nodes). I was on AI 6 months prior to lumpectomy, chemo and radiation. I tried 3 different AI meds over 6 months after radiation and decided to go off due side effect. I feel better off the Ais. Prior to decision I discussed with oncologist and my percent of recurrence without AI was only few percent points. It has been over 2 years since surgery and I continue to see oncologist every 6 months for recheck and have mammogram / MRI yearly. I have an MRI because my breast are very dense.

But, by sister had Stage 0 and diagnosed very early, she had lumpectomy, no chemo or radiation. In her case, the dr said it was important for her to take an AI because she had not had chemo or radiation to kill any cancer cells remaining.

So, have discussion with you oncologist and get the facts.

Good luck
Laurie M