A New Insight in Nonaneurysmal Subarachnoid Hemorrhage: the Potential Role of the Internal Jugular Veins.

 This is the first study investigating the correlation between jugular stenosis and the occurrence of na-SAH. The impaired venous outflow due to reduced venous caliber could result in an engorgement of the upstream intracranial veins with transient hypertensive phases facilitating ruptures. Further larger prospective studies are necessary to confirm these data.