My friend, who has lived with me for 9 years was recently diagnosed with AN. She is 89, and the nurses tell me she is not a candidate for surgery. I have not spoken with her doctors, and don't know what or who they are at this point. I have been reading on-line and see that the gamma knife and perhaps, radiosurgery can be used. She falls alot, her tumor is small from what they say, but I don't know how small, and I just want her to have some quality of life when she comes home. Any advice would be gratefully accepted.