Thank you, thank you, thank you!!!!!!!!!!!!
It is NOT MS. Capital N, Capital O, Capital T, NOT MS.
Apparently my sister is a freak of nature and has a "cavity" in her neck, basically a hole - probably there since birth. They have no idea why its causing an issue now and not before and it may never cause an issue again.
Its a relatively new "thing" in the Dr world - they only really discovered them with the advent of MRI's (or during autopsies). There's nothing for it. It might grow, but most likely won't. She'll see the neuro every 6 months for an evaluation and ONLY if the evaluation warrants it would they even bother doing another MRI. She does have to see him immediately if anything else worsens (but he's not expecting it too).
The best he could tell her was to be careful with her neck and not wrestle, but couldn't offer a good explanation why she shouldn't and if she has a lot of speeding tickets, to slow down.
No one can take this grin off of my face today!