Chronic cerebrospinal venous insufficiency in patients with multiple sclerosis.

<h4>Background</h4>The extracranial venous outflow routes in clinically defined multiple sclerosis (CDMS) have not previously been investigated.<h4>Methods</h4>Sixty-five patients affected by CDMS, and 235 controls composed, respectively, of healthy subjects, healthy subjects older than CDMS patient... View More