Critical basilar expansion of the sphenoidal sinus associated with a spontaneous cerebrospinal fluid fistula: the relevance of multidetector computed tomographic cisternography
Abstract:A 46-year-old woman presented with an intermittent nontraumatic cerebrospinal fluid (CSF) left rhinorrhea. A multidetector computed tomographic (MDCT) study was performed to investigate a CSF fistula (Figure).The sphenoidal sinus is prone to CSF leakage, when anatomical variations occur. The basilar expansion is a posterior expansion of the sphenoidal sinus (postsellar). It is considered critical for endoscopic surgery approach and also a predisposing factor to spontaneous or posttraumatic CSF fistula when the… Show more
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