I was diagnosed w a Meningioma, I had Gamma Knife Radiation bc it’s inoperable near a major vessel in brain. It was 14mm. Yours is very small whatever it is and there is plenty of treatment. I was a wreck like you hearing the diagnosis brain tumor, so far they think benign. The neurologist probably won’t be the best to see. Neurosurgeon and neuro oncologist (even if not cancerous) are the specialists you need. Best of luck and post a f/u if you’d like. Mayo Clinic is wonderful. I haven’t been there but I guess that’s why I signed up for this site. I had my treatment at New York Presbyterian/Columbia.