Hi James wife - Finding a physician who has experience in the treatment of arachnoid cysts can be very challenging. While we are not able to provide you with a specific physician recommendation, we can assist you in the process of finding one. Please join our new Group, Arachnoid Cyst Support Group, where you can talk with the other members and share information. You can find the group at this link: https://www.empowher.com/groups/arachnoid-cyst-support-group
We have several members with a lot of knowledge in this area, and I know they will want to help you.