“…1,4,12,13 The main neuroimaging findings that may accompany IIH are empty sella (70%), distension (45%), and tortuosity (40%) of the perioptic subarachnoid space, flattening of the posterior sclera (80%), and protrusion of optic nerve papillae into the vitreous and transverse sinus stenosis (90%). 5,14,15 IIH corresponds an increased ICP of unknown cause (thereby excluding secondary intracranial hypertension). 4,7 In IIH, the CSF composition is normal.…”