The NIH looks at veins inside MS brains compared to normals. "The finding that healthy veins of MS patients are significantly larger than those of healthy volunteers may reflect a pre-lesional vascular change in MS Brains or potentially an effect of diffuse brain volume loss." Please, NIH--fund studies into extracranial venous blockage. CCSVI could create this very scenario, by slowing venous drainage, causing venous hypertension, and intracranial venous distension.


Vascular Description of Perivenular Lesions in Multiple Sclerosis: National Institute of Neurologica
www.ninds.nih.gov