Get as many opinions as you can. If you are younger than 50, most will recommend surgery because while there is good data for radiation out to ten years, there is not much known about what happens in 20-30 years, and you don't want these coming back. If you consider radiation, the best gamma knife center is Dr. Lunsford in Pittsburgh, he trained with the inventor, and they have treated thousands. For Cyber knife, go to Stanford, I think the Dr. is Steven Chang, also the best for Ck. There is a third radiation type, but my philosophy is let everyone else go first, and see how they do--not enough data on long term outcomes. Whatever you choose, make sure they are an actual center established to treat ANs. Stay away from people who have only seen hundreds. These are benign tumors but they still are brain tumors. Surgeries are probably 6-8 hrs give or take a few. 10+ hours is no big deal, and I think the longest is 32 hrs. The good news is that the centers set up to do them have done lots (1000s) and they run like clockwork.