I am experiencing terrible headaches, vertigo, difficulty concentrating, facial pain, swollen eyes etc. I have also had chronic sinusitis for the past 2 and a half months. The result of the ct scan was that I have a cyst very close / on my "mini-brain" (cerebellum). I'm seeing a neurologist next week, but Im scared and confused. What is the success rate with regards to treatment of such a cyst?