I think your best bet would be to ask your doctor what that means

I asked my Neuro everything under the sun, I also have a copy of my MRIs for my own personal record. When I don't know something and can't reach my Neuro. I usually just research online.. so I found a website about LPs for you, but I still think you should ask your doc. and please don't worry until you know the results

And that's hard for me to say, cause I stress over a lot!
Monique
http://www.becomehealthynow.com/article/diagblood/635/