Neurosurgical Approaches to Cerebrospinal Fluid Rhinorrhea

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Abstract
The evolutionary concepts of pinpointing and treating cerebrospinal fluid (CSF) fistulas over the past few decades are reviewed taking into consideration the dynamic character of CSF circulation. The localization of the site of leakage is greatly facilitated by the judicious use of a variety of radioisotope and radiological techniques. The most recent are Metrizamide CT Cisternography and Magnetic Resonance Imaging. It is asserted that still the most challenging cases are those with intermittent liquorrheas, and those patients in which the site of the fistula is not easily defined. The authors will describe their personal experience with intracranial surgical repair of fistulas located in the anterior fossa.