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The exact pathophysiology of spontaneous CSF rhinorrhea is not always understood in some patients. Idiopathic intracranial hypertension (IIH) is now recognized as one of the causes of spontaneous CSF leak in the neurosurgical and ENT literature. Our aim was to set a management protocol for such cases according to the same setting intracranial tension (ICT). Methods: We prospectively managed patients with spontaneous CSF rhinorrhea who were admitted to our hospital between 1st of January 2014 and 31st of December 2017 with a prespecified treatment algorithm. Patients with a history of previous cranial or nasal surgery, trauma, skull base congenital malformations were excluded from the study. The patient’s demographics, clinical data, comorbidities, body mass index (BMI), first time or recurrent leakage and duration of the leak were collected. Results: 41 patients, 35 females and 6 males, presented with spontaneous CSF rhinorrhea with a mean BMI of 38 ± 4.16 Kg/m2. The mean pre-operative ICT manometry was 17.2 ± 5.9 cmH2O (range, 10 - 26 cmH2O). 43.9% of the patients were found to have an increased ICT (≥20 cmH2O) and underwent a permanent CSF diversion at the same setting of the endoscopic repair. None of the patients had a recurrence during the follow-up period. Conclusion: The prespecified treatment algorithm with measuring the ICT at the same setting of the endoscopic repair has a better result for control of spontaneous CSF rhinorrhea. This has led to no recurrence and decreased hospital stay.

The Management of Spontaneous Cerebrospinal Fluid Rhinorrhea in Patients at Risk for Increased Intracranial Tension