I was recently in a car accident and have had a constant headache and neck pain since. I have had X-Rays, a CT scan, and most recently, a MRI. The results of the MRI were normal, but it says that I have a perineural cyst at T2-3 that is 10x13 millimeters. What is this? I have tried to look up information on this, but everything I have found shows these in the low back area. I would really just like a little information about what this cyst is and what problems it could cause. Also, I have had my chiropracter look at the films from the tests, and he has said that I don't have the proper curvature in my spine, it is almost straight. Is this something that I should be concerned about? None of the other doctors have said anything about it. Any information you could give me would be very helpful. Thank you.