RT Journal Article SR Electronic T1 Idiopathic intracranial hypertension JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 515 OP 522 DO 10.1212/WNL.0000000000006166 VO 91 IS 11 A1 Lenck, Stéphanie A1 Radovanovic, Ivan A1 Nicholson, Patrick A1 Hodaie, Mojgan A1 Krings, Timo A1 Mendes-Pereira, Vitor YR 2018 UL http://n.neurology.org/content/91/11/515.abstract AB The recent discoveries of the glymphatic and lymphatic systems of the brain have helped advance our understanding of CSF physiology and may allow new insights in the understanding of idiopathic intracranial hypertension (IIH). The clinical and radiologic presentations of IIH appear to be related to congestion of the glymphatic system associated with an overflow of the lymphatic CSF outflow pathway. By revisiting the role of “vascular arachnoid granulations” in the brain, we hypothesize that an initial impairment of the transport of interstitial fluid from the glymphatic system to the venous blood of the dural sinuses may trigger the hydrodynamic cascade of IIH. Furthermore, we speculate that, similar to other water-exchange systems in the brain, a specific subtype of aquaporin is involved in this transport. This theory may eventually help to provide an underlying explanation for IIH and its associated conditions, since in most of them, the expression of several aquaporins is altered.AG=arachnoid granulation; AQP=aquaporin; CVP=cerebral venous pressure; ICP=intracranial pressure; IIH=idiopathic intracranial hypertension; ISF=interstitial fluid; TS=transverse sinus