Ouch, I hope all works out for you!

As far as scar tissue in the brain, from what I understood is that its dead tissue with colagen in it. As it hardens the colagen will try to escape and could cause complications. For the most part its not dangerous at all, but could be the cause for epilepsy in brain surgery and tbi patients. Dont quote me on this, as im not even 100% sure I understood correctly.