, I echo the other responses and add this:
In the future, I suggest you ask your doctor for a copy of the radiology report each time you get an MRI. Radiologists interpret the MRI and make an exhaustive list of what they observe. Not all doctors (including neurologists) are good at reading an MRI, so they rely on the radiologist's notes. Reading the report yourself gives you a reference from which you can ask follow-up questions.
Another good reason to obtain the report is that your doctor won't tell you everything that's on that list. I discovered that when I started getting my own and saw that one radiologist observed an enlarged thyroid lobe and gallstones in addition to MS-related lesions, two things my neuro never told me. The doc only discussed my brain/cervical lesions.
I hope you'll continue to go to bat for yourself and try to find a doc that is willing to investigate further, keep an open mind, and take you seriously. All my best, Kim, moderator, MS patient