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Published on: February 29, 2020
Temporal lobe encephalocele appearing as a lytic lesion of the skull base and pterygoid process
William E Bolger1, Christine Reger
1Department of Otolaryngology-Head and Neck Surgery, University of Pennsylvania Health System, Philadelphia, USA. wbolger@usuhs.mil
Abstract:
Meningoencephalocele is an uncommon condition in which brain tissue, meninges, or both protrude through a defect in the anterior cranial fossa and into the ethmoid sinus or nasal cavity. Much less often, brain tissue, meninges, or both protrude through a defect in the middle cranial fossa and into the sphenoid sinus. We report an unusual case of a middle fossa encephalocele that appeared as a lytic lesion of the skull base. The patient was treated successfully via a unique endoscopic transpterygoid approach--that is, an endoscopic approach through the maxillary sinus and pterygopalatine fossa and into the pterygoid process.
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