HI Suzy
   I Have only known about my AN since Feb 06, and I can only give you advice as I see it. My An is small also, at least it was in Feb., it is 8mmx10mm. I considered Gamma Knife and wait and watch; however, I have decided to have surgery. I am 40 and I don’t think I can deal with the thought of the AN being in my head. I understand that Gamma Knife could stop growth, maybe forever, maybe not. There have not been enough long term studies to satisfy me. I also understand that they have reduced the doses of radiation used recently to try to cut back on side effects, such as hearing loss, facial nerve damage etc. Since they are the same potential side effects as surgery, I don’t see the great benefits. Except of course they usually happen over time, and not immediately after procedure as in surgery. You really need to research GK for yourself. I also believe that there is a better chance of removing AN with fewer side effects if it is small; therefore, I am scheduled to have the middle fossa approach at House Ear Clinic in L.A. on 2June06. I have very little hearing loss in AN ear. The only symptom I really have is vertigo, (sometimes bad) but I could deal with that. I just really want this thing out of my head so I can start on recovery.
   I hope this helps, but ultimately you have to make your own decision. Just be confident in your decision, any your docs...I am///
Wishing you the best
Danny