I was told I had benign follicles can some enlighten me on what that exactly is and the effects of it?

Tiffany
I had a pelvic ultrasound done and my results came back and showed that there are no cysts no fibroids I do not have pcos but my uterine lining is really thick and that I have benign follicles growing on the outside of my uterus. Can someone enlighten me in exactly what that is & if anyone has ever had this themselves?