cheerleader wrote:drsclafani wrote:
I have been involved with this since 2009 and no one has ever mentioned the emissary veins. No one!
Hi Dr. S..welcome home! Actually, Marie and I were writing about emissary veins on here in relationship to heat intolerence in MS. And Dr. Flanagan was writing about it, too...although we hadn't read him at that time.
Here's me rambling....Jugular vein stenosis will probably affect all of the "tributary" veins surrounding them--and those include the emissary veins, which control the body's temperature regulation, and the thyroid veins, which control the release of thyroid hormone. I even postulated on another thread that vitamin D may be getting screwed up because the HPA axis (hypothalmic/pituitary/adrenal) pathway was being messed up, do to delayed signaling and slowed flow....but there are no studies on that yet. The neck veins are responsible for CSF, hormones and blood flow from the brain. Lots going on in there--
Marie linked this study on emissary veins from 3/09
I remain convinced that it's the overuse of the emissary veins messing up the brain's cooling mechnism in CCSVI.
Here's Dr. Flanagan on this very topic....he explains it quite well.
http://uprightdoctor.wordpress.com/2010 ... n-cooling/
It surprises me that external veins like the condylar emissary vein would flow INTO the head.
since i have begun starting all procedures from the transverse sinuses, i have noted three patterns in patients with ccsvi
1. enormous condylar veins draining into the posterior neck muscles and the vertebral veins
2. completely nonvisualized condylar veins
3. small condylar veins
I have never seen a condylar vein drain into the brain
I can make no correlations yet with heat intolerance since almost all patients have heat intolerance.
I havent made any correlation with spinal lesions. either.
Trying to understand why some patients have very large and others have very small condylar and other emissary veins is perplexing.
perhaps prenatal jugular malformations result in large emissary canals.
perhaps jugular stenoses developing after skull development inhibits enlargement of bony canals. I find it implausible that emissary canals would enlarge much later in life.
Thanks for the links