I have been having headaches and arm pain for awhile now. Just had an MRI 2 weeks and am not due to see my neurologist for another week to discuss the resultls. I did call as I have been quite tense about this (thinking tumor) and they did say there is no tumor and the only finding looks to be "moderate signal change" on the cervical spine MRI. Can anyone tell me what this can possibly mean?

Thanks in advance.