I will be having Gamma Knife Radio Surgery for a meningioma that is growing. Have any of you had this procedure and does it work? I am having only minors symptoms- headache, motion sickness, dropping things, memory issues vertical double vision at night. I don't know if these are related and will go away. I have Sjogrens and my -surgeon thinks it is causing the tumor. If you have one meningioma, can you get more?