Prevalence of Incidental Narrowing of the Superior Segment of the Internal Jugular Vein in Patients Without Multiple Sclerosis. Diehn FE, Schwartz KM, Hunt CH, Eckel LJ, Campeau NG, Carter RE, Allred JB, Kallmes DF Clin Neuroradiol. 2013 Jul 2. PMID: 23817770. Abstract CommentRecommendBookmarkWatch