I do, actually, on one side only.
But this is about the dural sinuses, straight sinus, transverse sinus, occipital sinus...these are all names for various deep cranial veins.
According to Dr. Sclafani, they have great variability, we don't know what's pathological. But in CCSVI, we have reports of missing sinus veins or obstructions. They aren't currently being treated, because they're up too high, the risk/benefit ratio is unknown.
On a totally anecdotal level, if anyone here who has a known sinus vein abnormality wants to answer, can you tell me if you have white matter lesions near or upstream from that sinus vein?
If I may...
The dural sinuses (sagittal, straight/transverse, occipital, sigmoid, etc.) are actually carved into the underside/inside of the skull (outside the brain, between the layers of dura matter that cover the brain), and they are fixed in nature, just like built-in cement drainage pipes are fixed, rather than being flexible like true veins. The sinuses are part of the vascular system, but they are not veins. The "deep cranial veins" drain into the sinuses which drain into the IJVs.
These sinuses are not the frontal sinuses associated with a traditional sinus infection that drains through the nasal passages and down the throat, but they are similar in that they are all built-in spaces/cavities; hence, they share the same medical term of sinus.
Having said that, though, there is the "dural sphenoid sinus" which, if I understand somewhat correctly, shares the same bone wall as the frontal sinus directly behind the nose (or something like that). I am completely missing the dural sphenoid sinus which means blood must back up (reflux) back into the veins of my brain to try to find another dural sinus down to the IJVs. I believe this is partly why my liberation wasn't successful.
No, unfortunately, I can't tell if I have inflammation, demyelination, axonal loss, atrophy or iron deposits near or upstream from my malformed/missing dural sinuses in either white matter or gray matter areas because none of my previous brain MRI reports specified this info, BUT my next one will, that's for certain!!
I don't know if I have collateral veins in my brain. Is the Transcranial Doppler US a test that can show these? Would such collaterals show up in an MRI? Anyone know?