Surgical management of a lateral sphenoid sinus encephalocele: 2-Dimensional operative video

Encephaloceles are considered rare with an approximate incidence of 1 in 35,000, and sphenoid encephaloceles are even more uncommon.2 Two types of sphenoid encephaloceles exist: medial perisellar encephaloceles, and lateral sphenoidal encephaloceles. Surgical correction of the lateral sphenoid reces...

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Main Authors: Ryan W. Sindewald, Michael G. Brandel, Arvin R. Wali, Carol H. Yan, David R. Santiago-Dieppa
Format: Article
Language:English
Published: Elsevier 2025-01-01
Series:World Neurosurgery: X
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Online Access:http://www.sciencedirect.com/science/article/pii/S2590139724001339
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author Ryan W. Sindewald
Michael G. Brandel
Arvin R. Wali
Carol H. Yan
David R. Santiago-Dieppa
author_facet Ryan W. Sindewald
Michael G. Brandel
Arvin R. Wali
Carol H. Yan
David R. Santiago-Dieppa
author_sort Ryan W. Sindewald
collection DOAJ
description Encephaloceles are considered rare with an approximate incidence of 1 in 35,000, and sphenoid encephaloceles are even more uncommon.2 Two types of sphenoid encephaloceles exist: medial perisellar encephaloceles, and lateral sphenoidal encephaloceles. Surgical correction of the lateral sphenoid recess encephalocele is achieved via one of two endoscopic approaches: extended sphenoidotomy or transpterygopalatine. Extended sphenoidotomy is preferred if the angle between the access door and lateral extension of bone defect is greater than 35°1. Otherwise, the transpterygopalatine approach is used. Intraoperative video demonstrating an extended sphenoidotomy approach to correcting a lateral recess sphenoidal encephalocele has not previously been published.Here we present a case of a 41-year-old female who presented with meningitis, a cerebrospinal fluid leak, and an incidental sphenoid mass. Brain MRI redemonstrated the mass in the sphenoid sinus consistent with an encephalocele occupying Sternberg's Canal. The patient consented to the procedure. The video demonstrates the skull base approach, encephalocele extraction, collagen inlay, and nasal septal bone and vascularized pedicled nasoseptal flap placement. Postoperative imaging confirmed the placement of the collagen inlay and nasal septal bone autograft. The patient recovered from surgery and was discharged on post-operative day 3 with no cerebrospinal fluid (CSF) leak recurrence. Postoperative follow up demonstrated viable nasoseptal graft without evidence of CSF leak.For patients with favorable anatomy, an extended sphenoidotomy approach to lateral sphenoid sinus encephalocele resection is a preferred alternative to the transpterygoid approach. This surgical video demonstrates the technique for managing lateral sphenoid sinus encephaloceles occupying Sternberg's canal, including endonasal approach, encephalocele resection and posterior sphenoid wall repair.
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spelling doaj-art-3e833f33d8a04563a9b4df6cb524e1b52025-02-10T04:34:48ZengElsevierWorld Neurosurgery: X2590-13972025-01-0125100402Surgical management of a lateral sphenoid sinus encephalocele: 2-Dimensional operative videoRyan W. Sindewald0Michael G. Brandel1Arvin R. Wali2Carol H. Yan3David R. Santiago-Dieppa4UC San Diego School of Medicine, San Diego, CA, USA; Corresponding author.Department of Neurosurgery, University of California San Diego, San Diego, CA, USADepartment of Neurosurgery, University of California San Diego, San Diego, CA, USADepartment of Otolaryngology, University of California San Diego, San Diego, CA, USADepartment of Neurosurgery, University of California San Diego, San Diego, CA, USAEncephaloceles are considered rare with an approximate incidence of 1 in 35,000, and sphenoid encephaloceles are even more uncommon.2 Two types of sphenoid encephaloceles exist: medial perisellar encephaloceles, and lateral sphenoidal encephaloceles. Surgical correction of the lateral sphenoid recess encephalocele is achieved via one of two endoscopic approaches: extended sphenoidotomy or transpterygopalatine. Extended sphenoidotomy is preferred if the angle between the access door and lateral extension of bone defect is greater than 35°1. Otherwise, the transpterygopalatine approach is used. Intraoperative video demonstrating an extended sphenoidotomy approach to correcting a lateral recess sphenoidal encephalocele has not previously been published.Here we present a case of a 41-year-old female who presented with meningitis, a cerebrospinal fluid leak, and an incidental sphenoid mass. Brain MRI redemonstrated the mass in the sphenoid sinus consistent with an encephalocele occupying Sternberg's Canal. The patient consented to the procedure. The video demonstrates the skull base approach, encephalocele extraction, collagen inlay, and nasal septal bone and vascularized pedicled nasoseptal flap placement. Postoperative imaging confirmed the placement of the collagen inlay and nasal septal bone autograft. The patient recovered from surgery and was discharged on post-operative day 3 with no cerebrospinal fluid (CSF) leak recurrence. Postoperative follow up demonstrated viable nasoseptal graft without evidence of CSF leak.For patients with favorable anatomy, an extended sphenoidotomy approach to lateral sphenoid sinus encephalocele resection is a preferred alternative to the transpterygoid approach. This surgical video demonstrates the technique for managing lateral sphenoid sinus encephaloceles occupying Sternberg's canal, including endonasal approach, encephalocele resection and posterior sphenoid wall repair.http://www.sciencedirect.com/science/article/pii/S2590139724001339EncephaloceleExtended sphenoidotomySternberg's canalTranspterygoidTranspterygopalatine
spellingShingle Ryan W. Sindewald
Michael G. Brandel
Arvin R. Wali
Carol H. Yan
David R. Santiago-Dieppa
Surgical management of a lateral sphenoid sinus encephalocele: 2-Dimensional operative video
World Neurosurgery: X
Encephalocele
Extended sphenoidotomy
Sternberg's canal
Transpterygoid
Transpterygopalatine
title Surgical management of a lateral sphenoid sinus encephalocele: 2-Dimensional operative video
title_full Surgical management of a lateral sphenoid sinus encephalocele: 2-Dimensional operative video
title_fullStr Surgical management of a lateral sphenoid sinus encephalocele: 2-Dimensional operative video
title_full_unstemmed Surgical management of a lateral sphenoid sinus encephalocele: 2-Dimensional operative video
title_short Surgical management of a lateral sphenoid sinus encephalocele: 2-Dimensional operative video
title_sort surgical management of a lateral sphenoid sinus encephalocele 2 dimensional operative video
topic Encephalocele
Extended sphenoidotomy
Sternberg's canal
Transpterygoid
Transpterygopalatine
url http://www.sciencedirect.com/science/article/pii/S2590139724001339
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