I have doubts about the noise and cell phone theories. I went to a few concerts while in college, and I listen to loud music occasionally. I hardly ever use a cell phone. I think if the noise and cell phone theories were true there were be so many cases that it would be more like 1 in a 100 instead of 1 in 100,000 cases. Just my opinion. I agree that living is hazardous to one's health. It would be nice to know what is going on, though, that causes this thing to appear. With all of the advances in medicine, I have no doubts that one day we will know. Hopefully it will lead to prevention. I have a small AN (5mm x 4mm) and so far I am watch and wait. No growth shown in second MRI. I feel blessed so far, but I am still fairly young (47), and I know there is the possibility that it will grow. Have decided not to worry about it for now, but sometimes it is hard. Always on my mind literally! Best wishes to all of you who are dealing with surgery, radiation and watch and wait issues. Nancy