Diagnosis and Treatment of Spontaneous Cerebrospinal Fluid Otorrhea

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Abstract
Two consecutively operated-on adult cases with spontaneous cerebrospinal fluid otorrhea were reviewed. Three meningoencephaloceles through tegmental defects were found. Each cele was peduculated through a small dural dehiscence partially obstructed by herniated brain. The otic capsule was normal in both cases. Bipolar cautery was used to reduce the size of the meningoencephalocele and to allow this tissue to assist in the closure of the defect. Conchal cartilage was placed through the tegmental defect to act as a self maintaining intracranial repair of the bony dehiscence. These cases and the literature suggest that fistulization of dura is more frequently the cause of spontaneous cerebrospinal fluid otorrhea in adults than is a defect in the otic capsule. Thus, direct surgical inspection of these areas is required.

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