I have a spinal cavernoma the size of a marble. Ive already lost the use of my left leg,starting to have same symptoms in right leg. Expected to have surgery December 2013 so very scared. I have a 20%chance of walking 80% chance of being completely paralyzed, but without the surgery it will progress to where I'll be paralyzed anyway without having a chance to walk at all. That little 20% is all I have to hope for