My MRI from the top view looks similar to yours. I have the same kind of small lesion, only mine is in the front on the end of the Y you see in the middle at a certain level. I haven't seen my scans from any other angle. The neurologist I had didn't even want to show me and didn't show me my spinal MRI either. That among other things is why I see a new neuro in July.
I also have a HUGE area of white in my right sinus/nasal area but was told it's just polyps. But think it's weird they'd only be on one side? Hopefully the new neurologist is more thorough and listens.
I have a book that I'm using to keep track of my symptoms on a daily basis... and it's a book already! Have had small symptoms for years that I wrote off and this or that but was hit hard in mid February and I'm still fighting that and looking for answers.
Welcome to limbo land.