RT Journal Article SR Electronic T1 Prevalence of dural venous sinus stenosis and hypoplasia in a generalized population JF Journal of NeuroInterventional Surgery JO J NeuroIntervent Surg FD BMJ Publishing Group Ltd. SP 1173 OP 1177 DO 10.1136/neurintsurg-2015-012147 VO 8 IS 11 A1 Durst, Christopher R A1 Ornan, David A A1 Reardon, Michael A A1 Mehndiratta, Prachi A1 Mukherjee, Sugoto A1 Starke, Robert M A1 Wintermark, Max A1 Evans, Avery A1 Jensen, Mary E A1 Crowley, R Webster A1 Gaughen, John A1 Liu, Kenneth C YR 2016 UL http://jnis.bmj.com/content/8/11/1173.abstract AB Background and purpose While recent literature has described the prevalence of transverse sinus stenosis in patients with idiopathic intracranial hypertension, tinnitus, and refractory headaches, it is unclear what the prevalence is in the general population. This study evaluates the prevalence of venous sinus stenosis and hypoplasia in the general patient population.Materials and methods 355 of 600 consecutive patients who underwent CT angiography of the head met the inclusion criteria. The diameters of the dural venous sinuses were recorded. Each study was evaluated by a neuroradiologist for the presence of stenoses. Univariate and multivariate statistical analyses were performed by a statistician.Results The prevalence of unilateral transverse sinus stenosis or hypoplasia in a sample of patients representing the general population was 33%, the prevalence of bilateral transverse sinus stenosis was 5%, and the prevalence of unilateral stenosis with contralateral hypoplasia was 1%. A multivariate analysis identified arachnoid granulations as a predictor of stenosis (p<0.001). Gender trended toward significance (p=0.094). Race was not a significant predictor of stenosis (p=0.745).Conclusions The prevalence of bilateral transverse sinus stenosis in the general population is not trivial. These data may be used as a reference for understanding the mechanistic role of stenoses in idiopathic intracranial hypertension, tinnitus, and refractory headaches.