Spontaneous Cerebrospinal Fluid Leaks: A Variant of Benign Intracranial Hypertension
Abstract
Objectives:
Previous reports indicate that elevated intracranial pressure (ICP) may cause spontaneous cerebrospinal fluid (CSF) leaks. In this study we examined the clinical diagnosis of benign intracranial hypertension (BIH) in this population using the modified Dandy criteria.
Methods:
We performed a retrospective review of clinical data and measurements of ICPs after surgical repair.
Results:
Sixteen patients with spontaneous CSF leaks were surgically treated from 1996 to 2002. In 11 patients with CSF pressure measurements, strict adherence to the modified Dandy criteria definitively confirmed a diagnosis of BIH in 8 patients (72%) and a likely diagnosis in the 3 remaining patients. The mean ICP was 31.1 cm H2O (range, 17.3 to 52 cm H2O), and 81% of the patients were obese middle-aged women. Clinically, all patients had signs and/or symptoms of elevated ICP, such as headache (91%), pulsatile tinnitus (45%), hypertension (45%), balance problems (27%), and visual complaints (18%). Surgical repair was 100% successful in leak cessation over a mean follow-up of 14.1 months.
Conclusions:
Most patients with spontaneous CSF leaks fulfill the modified Dandy criteria; thus, this disorder appears to be a variant of BIH. Further investigation is needed to determine the exact cause of elevated CSF pressures in this group and whether medical or surgical treatments to correct the intracranial hypertension are warranted.
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Article first published: July 2006
Issue published: July 2006
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PubMed: 16900803
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This article was published in Annals of Otology, Rhinology & Laryngology.
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