As Mac indicated, a 3 cm AN is right on the cusp of being able to be treated with radiosurgery. There are a number of factors in terms of the physical impact of the tumor on the adjacent structures as to whether it was preferable to surgically remove or if treating it with radiation is safe. That being said, I am aware of several people who have have similar size AN's treated with GK or CK and are doing well, so I think it would be worth your pursuing an opinion on that option.
Kaiser does not do radiosurgery and has a hard time deviating from their "playbook" of solutions. Those who know my story are aware I do not have a high personal opinion of the Kaiser HMO as a "cutting edge" place for the best practices available. I think they are a wonderful medical provider providing your healthy
. I was able to escape kaiser and get into a PPO option, but I do know Kaiser will send people to Radiosurgery in network if you push it. They have a relationship with Stanford for CK treatments and given the size of your AN I would go there if you want an opinion as to whether you're a candidate. I would recommend Dr. Steven Chang who was my neurosurgeon, he does both options and I think he would recommend which was best for you.
Here is a profile on him
Steven D. Chang, M.D.
Assistant Professor of Neurosurgery
Director of Cyberknife Radiosurgery
Curriculum Vitae (CV)
(650) 723-7093 Neurosurgery Clinic
Dr. Chang specializes in the treatment of vascular disorders and tumors of the brain and spinal cord. He is the Neurosurgery Director of Cyberknife Radiosurgery. His cerebrovascular work focuses on the use of surgery and radiosurgery for cerebral aneurysms and vascular malformations (AVMs). He also specializes in surgical and radiosurgical (Cyberknife) treatment of brain tumors such as acoustic neuromas (fractionated radiosurgery), meningiomas, brain metastases, and pituitary tumors. He is one of the few physicians in the world today specializing in radiosurgery treatment of tumors of the spine. His research focuses on the development of new methods of utilizing stereotactic radiosurgery and Cyberknife Ã¢â€žÂ¢ for the treatment of tumors of the brain and spine. Dr. Chang has also published numerous articles, abstracts and book chapters on the subject of cerebrovascular disease and radiosurgery treatment of brain and spine tumors.