Document Detail

Association of Benign Intracranial Hypertension and Spontaneous Encephalocele With Cerebrospinal Fluid Leak.
MedLine Citation:
PMID:  23150096     Owner:  NLM     Status:  Publisher    
OBJECTIVE: To determine the incidence of intracranial hypertension in patients with spontaneous encephalocele with cerebrospinal fluid (CSF) leak. STUDY DESIGN: Retrospective case review. SETTING: Tertiary care neurotology practice. PATIENTS: Patients presenting between 2008 and 2011 with spontaneous encephalocele and CSF leak in the temporal bone. INTERVENTION(S): Lumbar puncture with opening pressure measurement after encephalocele repair. MAIN OUTCOME MEASURES: Patient age, sex, postoperative course, body mass index, and postoperative intracranial pressure. RESULTS: Of the 26 patients identified with spontaneous encephalocele with CSF leak, 9 patients had postoperative lumbar puncture data. Of those 9, 89% were female subjects, and 11% were male, with a mean age of 57 and a mean BMI of 41 kg/m (morbidly obese). The mean opening pressure was 24.5 cm H2O. Approximately 33% had normal intracranial pressure (mean, 15 cm H2O; range, 10-17 cm H2O); 67% had elevated intracranial pressure (mean, 29 cm H2O; range, 23.5-40 cm H2O). The incidence of BIH in the general population is 0.001%. Of the 6 with intracranial hypertension, 3 (50%) were placed on acetazolamide for fundoscopic findings, postoperative headache, and/or visual changes. Mean time to LP after repair of encephalocele was 13 months (range, 4 days to 75 months). CONCLUSION: This study shows that benign intracranial hypertension is prevalent in a significant number of patients presenting with spontaneous encephalocele with CSF otorrhea at a rate much higher than is found in the general population. This finding has direct clinical implications and suggests that all patients with spontaneous encephalocele/CSF leak warrant evaluation for benign intracranial hypertension.
Laura Brainard; Douglas A Chen; Khaled M Aziz; Todd A Hillman
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Publication Detail:
Journal Detail:
Title:  Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology     Volume:  33     ISSN:  1537-4505     ISO Abbreviation:  Otol. Neurotol.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-11-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100961504     Medline TA:  Otol Neurotol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1621-1624     Citation Subset:  -    
*Division of Neurotology, and †Department of Neurosurgery, Allegheny General Hospital, Pittsburgh, Pennsylvania, U.S.A.
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