If you live in Chicago area and looking for a great doctors to remove your AN I can highly recommend Dr. Battista and Dr. Kazan, who do the surgery together as a team. There is only a handful of doctors that do that surgery in Chicagoland and I feel so lucky I found a great ones. I had many issues with my insurance, but eventually I was allowed to have a surgery, and Dr. Battista, and Dr. Kazan agreed to do a it in a hospital that my insurance picked. I couldn't say more good things about them. They removed 100% of my tumor, and nothing else got damaged. They came everyday to see me in the hospital they don't usually work in. They are caring, extremely knowledgeable and soo experienced surgeons. I feel better everyday and thanks to them I can live tumor free.