Sorry I am nearly 6 months out of date. My AN was dianosed in 2005, wait and watch untill 2008 when AN was 1.8cms. Gamma Knife surgery carried out June 2008, two nights in Sheffield UK Hallamshire Hospital UK, staff were great, proceedure lasted most of the day(MRI and Gamma Knife equipment in different Hospitals). Yes the head frame was a little uncomfortable, but no real pain. I drove home the following day 250 miles back to the south coast with no problem No change in my hearing, ie I still have some hearing in my poor ear.
Now 3 years later haven't found a hearing aid that helps me, tried a commercial digital aid, plus many adjustments, got my money back. NHS now provided me with a similar aid with similar result, next they provided a CROS aid which was better but after 4 months I came to the conclusion that it was not that better than without any hearing aid. Background noise and hearing speech differentiation being the main problems. Currently looking at possiblity of trying a Transear a USA product that aims at single sided deafness.
I have had a MRI every year since, showing some reduction in density and size, hopefully if things are still OK next year, the following MRI will be 2 years later
The only other small problem is that I believe my balance is not as good as it was in 2005, is this due to my age (77), or the AN and gamma knife surgery.
No real long term effects, back to playing tennis and regarding myself as being very lucky to have had the AN diagnosed relatively early, and to have had it treated with Gamma knife. Thank God for modern technology, MRI and Gamma Knife, and the skill of consultants in developing teatments, and carrying out the new procedures
Ceepee