There's a really good post on the This is MS site for a Review of MS and the possible association with

the venous system,  the hypothesis of CCSSVI and its treatment.   The direct link is way too long for me

insert (I read somewhere a long time ago how its possible to "shorten" URL's  - anyone have that info?)

but the following is the TiMS link.   It's a long review but very well written (despite 2 of the reviewers being Neurologists !!!),   and it does give a pretty balanced overview of this whole issue:   go to -

http://www.thisismscom/ftopict-17472.html