I was diagnosed with an AN of 2.5cm in diameter in May 2007. In late August 2007, after considering many choices (do nothing, gamma knife, surgery, etc), I chose the sub-occipital surgery option knowing that I will have facial paralysis, deafness and loss of balance. The 8-hours long surgery option is the only option that can remove the tumor 100%. Over 4 months after the surgery, I have overcome my loss of balance thanks to the PT who specializes in vestibular treatments. My facail paralysis has gotten better. I have some movements back but I still have the "crooked" smile. If full movement is not back by April this year, I will try accupuntue or cosmetic surgery. My deafness is permanent so I will have a bone-anchored hearing aid device installed (date to be determined after my May consultations with my neurosurgeon and my ENT surgeon). I also have some emotional changes (hot-tempered, speak my mind, and opinionated) that I am coping with with help from my wife, my family and members of an AN support group.
I recommend that you contact Dr. John Patrick Carey (ENT surgeon) and Dr. Rafael Tamargo (neurosurgeon) both of whom work at the Johns Hopkins University Hospital in Baltimore. Dr. Carey is an expert on brain tumors in the 7th cranium area and Dr. Tamargo is one of the best neurosurgeons in the USA. Dr. Tamargo has operated close to 400 AN patients without any complications or fatality. He is also one of the surgeons who succesfully removed 2 Siamese twins co-joined at the head. You could look both Dr. Carey and Tamargo up on the JHU hospital website.
Whatever method you decide to go with, I recommend to do it quickly and to have it done at JHU Hospital since ith is the number 1 hospital in the USA (as reported by the US News & World Report magazine).