Welcome to ThisIsMS. I'm sorry that you've found yourself here, but hope that you find it to be a supportive community.
Yes, spine only between c2 and c4. I'm not sure what that means yet... I'm still waiting to see a specialist.
P.S. thanks for the welcome message
C2 and C4 are the second and fourth cervical vertebrae. These are found in the neck region of the spine. The cervical region of the spinal chord is a common region for MS lesions. The vertebrae are divided up into different groups, from top to bottom - cervical, thoracic, lumbar and sacral. There is also the cocygeal region which makes up the tailbone.
Here's a brief outline of spinal anatomy...
http://www.coloradospineinstitute.com/s ... lregions14