You are well read and savvy about test results. I had an MRI about 10 years ago that showed hyperintensities in my brain which no one investigated further nor even mentioned. A couple of years ago a neurology migraine specialist noted that and mentioned MS but didn't look into it at all. I have had an MRI recently and tried to ask about looking for the MS hyperintensities in the spinal cord but got nowhere with it. With all the pain and problems I have I have done so much "internet" research which just tics them off when you ask about anything you have found. We are supposed to be our own best advocates but that is an impossible mission. I wish you the best of luck in solving the mystery.