Hi Wilbur,
RE: my AN, like I say, I had a seizure, not vertigo ,, and neurologist sent me for the MRI Which ended up showing the AN. that was July 2008. I had another seizure within the month and was put on anti seizure meds. I decided to wait to treat as my symptoms were not that bad and I was able to work.
My symptoms progressed to the point of being debilitating in 2011. That is when I decided on surgery. Not only is size of the tumor important,, ( mine grew to 2.8 cm at surgery) but the location of it is most important. Mine grew toward the brain stem and was impacting it. That is why I was beginning to feel so much worse by 2011. I had surgery, trans lab, in Oct 2011,, 5 year anniversary on the 27th,, ,mine has not regrown ,, knock on wood,, so far. I have an MRI coming up.
So watch your symptoms, get several opinions on how to treat it and you will make the decision that is right for you. There are several doctors who will provide free consultations by phone which I did and it was most helpful. One group is the House clinic in Los Angeles. HEI.com I think. There are others you can find on the forum. You may also prefer to check into radiation for treatment,, I didn't want that route so can't speak to it.
Good luck and let us know how your journey goes. Hope you never experience another seizure!! They are quite scary and disconcerting!! Especially for those around you,,,,
Jane