diagnosis of IIH, these defects may assume increased significance. Papilledema resolved in 15 (94%) of 16 pa tients, an impressive validation of the proposed pathophysiology of IIH, that is, intracranial venous hypertension. Visual acuity stabilized or improved in all patients. Headache was a prestent complaint in 12 patients, and it inconsistently improved: in 2 patients it resolved, in 8 it improved, and there was no change in 2 patients. Interestingly, in all 6 male patients with IIH, headache was not a presenting complaint. The treatment failure rate for sinus stenting for IIH was 20% as measured by sinus narrowing above the stent. All stents did remain patent, and there was no stenosis within the stent itself. While this incidence of acquired stenosis is disturbing, it still compares favorably to the risks of lumboperitoneal (approximately 75%) or ventriculoperitoneal/ventriculoatrial (approximately 50%) shunt failure. The vision rescue operation (optic nerve sheath fenestration) has a 40% failure rate, and is an operation that most likely is successful only when the subarachnoid space around the optic nerve is obliterated due to postoperative arachnoiditis, thus preventing transmission of intracranial hypertension to the lamina cribrosa of the optic fundus. In this company, 100% patency rate of stenting, and a 20% proximal stenosis rate, should be viewed as an upgrade. Obesity is clearly a risk factor for the development of IIH, and in fact 88% of their patients were overweight to obese, and fully 63% of their patients had a body mass index (BMI) of 30 kg/m 2 , a comorbidity that does not appear to be strictly a chance occurrence. In fact, there is growing literature that bariatric surgery can also yield favorable outcomes for IIH. The relationship between obesity and sinus stenosis, implicitly raised by this article, is something for future investigators to consider. It is certainly conceivable that there may be a complex interplay between BMI and venous sinus stenosis, in which the former compounds the latter, resulting in a clinical syndrome of IIH.