I am new to this forum, and thankful it is available. I have been to Mayo-Scottsdale but wanted to get a second opinion from Dr. Spetzler at Barrow's Neurological in Phoenix. Has anyone been treated at Mayo Clinic in Scottsdale or by Dr. Spetzler at Barrow's? I've been in the watch and wait period since 2007, but my AN is growing, however slowly (2 now). I have hearling loss in my left ear -- but they say that with surgery there is the 60 percent possibility they can save what is left. I would like that, but with what I read about surgery, I'm petrified! Has anyone been to Dr. Spetzler in Phoenix? I have read so much about the House clinic and think perhaps I should be looking in that direction as well?!