New Benign Tumor while on letrozole?

bakja

Has anyone developed benign tumors while actively taking letrozole? I have been on letrozole since January 2019 after having a lumpectomy and radiation for left breast DCIS in October 2018. At my yearly breast MRI the result was suspicious for my right breast. I just had a biopsy which discovered a new benign tumor in my right breast. I am wondering how common it is to develop a benign tumor while on letrozole? Thanks for any insight. First time poster here!