What would you do?

I recently discovered that a CT scan I had done in 2022 showed that I had no upper right sinus cavity. No one told me this at the time. It also showed areas of Cerebral white matter mild poorly marginated bifrontal periventricular with decreased density. No one told me that either. Not that I would have known what that meant.
The point is, I have had NUMEROUS CT scans and three MRI’s of the brain (including one with and without contrast) and every single one of them declared that everything was normal. They specifically stated that my sinuses were unremarkable and that there was nothing else that was of concern. Until last week, when a new CT was diagnosed with the missing sinus and an occlusion of 4mm where it should have been. The doctor who showed me this occlusion was an ENT and when I asked him what it was, he said “Not my job. Call your neurologist.” The problem is, the radiologist missed it, didn’t include it in the report, and when the doctor was asked about it, he denied showing it to me. A case of CYA in my opinion.
I’m scheduled for another brain MRI soon, but I feel like all these years I’ve been told that my symptoms were psychological, when in the meantime, my new neurologist seems to think I may have MS. I guess we shall see.
Would you seek out a doctor that would go back over all those old tests just to see what the progression has been or would you let it go? Would you trust that the results of the upcoming MRI (being done at the same place) were accurate? Would you get a lawyer to sort it all out?
I’m just curious. I feel like I’m dying and I have lost control of my body. I’m in a massive amount of pain and all they want to do is mask it with addictive drugs or spinal implants.
I’m ready to just give up.