mass of blood vessels on spine

I have had pain in my neck to the middle of my sholder blades for about 1.5 now and i have had xrays  that show nothing and final a MRI that shows i have a mass of blood vessels on cmy spine what does this me my doctor didnt tell me much just called and told me i had a  large mass on my spine and that he was sending me to a Neurosurgeon. I have sent my images to a surgeon they are review to see if i need surgery but it will take a couple weeks im scared cause it is on my spine. also i was in a car accident which is when the pain started and the left side of my face swelled up it went down after a few days but not away to this day the left side is still a little swollen. they doctor told me that this mass has nothing to do with my accident but i dont know.  any information would be appreciated. thank you