Hello,
Sorry you are going through this right now. I had a colloid cyst of the third ventricle surgically removed Nov 2000. My neurosurgeon was Dr. Leon Ravvin in Lexington, KY. I know this is quite a distance from you, but I am sure you will find a highly skilled neurosurgeon in your area. Look in your phone book for the brain injury association in your state. (arachnoid cyst is considered an Aquired Brain Injury)I have heard the name Dr. Jho quite frequently on different boards, so he would definetly be a good one to research.

Best of luck to you. Do a Google search on arachnoid cysts. You should find quite a bit of helpful information, Dodi