I have the same, right side, hearing absent that side. I had gamma knife radiation and, after one year, no growth. Will be getting an MRI after another year passes. Dizziness also, unsteady walk, although being 87 doesn't help the unsteadiness I imagine. If it's still growing after 6 months I wouldn't wait asking about some form of whatever 's available in your case - the gamma radiation is not atomic type, consists of gamma waves in my case.