I am a 31yr old female with a small AN on my left side. I have been to Mayo (Rochester) as well as UofM and St. Joes (CyberKnife center) I received rather different opinions from all. (Am currently watching and waiting)I have tinnitus and migraines (one to two a month for several days) My symptoms started the same time I got pregnant and were the worst at 9mo pregnant. (Vertigo etc) After having my son they subsided substantially and I had my MRI where we discovered the AN. I breastfed for 18mo and have now been done for 7; I feel it hasn't been as bothersome since I quit nursing. I also found it to be more noticable and irritating during my period. My question is: (one of them lol) is there a correlation between AN and hormonal changes? One surgeon told me I would need to have it removed before getting pregnant again or it would swell and cause more damage, another told me that wasn't true...hard for me to believe there isn't a relation-at least in my case...