Cab,
Your tumor size does seem small but I don't know a lot about cyberknife vs surgery. The reason I chose surgery was twofold. I didn't want anymore pressure on the brainstem and there usually is swelling at the site from the radiation. Also because of the location and just in general, I wanted the tumor gone from my head. I couldn't go on knowing, that dead or alive, there was a tumor in my head! Again, it's a personal choice which was something that also hit me by surprise because usually, for me it's been no choices. I had a perforated ulcer that had to be fixed, no choices there. My babies were breach, csections were done, no choices there either. So when I was given the choice, it threw me for a loop. I had to make a major medical decision that I had to research and I had no idea about all this medical stuff, that's what the doctors were for, but in today's world, we need to be our own advocates for this stuff. It was a new awakening for me. You have to go with what you feel is right and live with it, which is a tough pill to swallow. Pick a doctor you feel comfortable with and who has done alot of these surgeries, if that's what you are sure you want, and go forward, no looking back once you make your decision. Same thing goes for if you make the decision to have radiation, just move forward with your decision. I wish you the best with whatever procedure you decide to go with!
~Karen