Internal Occipital Crest Misalignment with Internal Occipital Protuberance: A Case Report of Posterior Cranial Fossa Anatomic Variations

During gross anatomy head and neck laboratory session, one dissection group observed an abnormal anatomic variation in the posterior cranial fossa of a 94-year-old male cadaver. The internal occipital crest was not aligned with internal occipital protuberance and groove for superior sagittal sinus....

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Main Authors: Jae Ha Kim, Maha Ahmad
Format: Article
Language:English
Published: Wiley 2016-01-01
Series:Case Reports in Neurological Medicine
Online Access:http://dx.doi.org/10.1155/2016/7575623
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author Jae Ha Kim
Maha Ahmad
author_facet Jae Ha Kim
Maha Ahmad
author_sort Jae Ha Kim
collection DOAJ
description During gross anatomy head and neck laboratory session, one dissection group observed an abnormal anatomic variation in the posterior cranial fossa of a 94-year-old male cadaver. The internal occipital crest was not aligned with internal occipital protuberance and groove for superior sagittal sinus. It seemed that the internal occipital protuberance was shifted significantly to the right side. As a result the skull was overly stretched in order to connect with the internal occipital ridge. These internal skull variations of occipital bone landmarks can influence the location of adjacent dural venous sinuses and possibly influence cerebrospinal fluid flow. Similar anatomical anomalies have been attributed to presence of hydrocephalus and abnormalities in cisterna magna.
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spelling doaj-art-3a076f4d106146c7ab52cc56931bb62e2025-02-03T01:10:25ZengWileyCase Reports in Neurological Medicine2090-66682090-66762016-01-01201610.1155/2016/75756237575623Internal Occipital Crest Misalignment with Internal Occipital Protuberance: A Case Report of Posterior Cranial Fossa Anatomic VariationsJae Ha Kim0Maha Ahmad1Department of Biomedical and Diagnostic Sciences, University of Detroit Mercy School of Dentistry, Detroit, MI, USADepartment of Biomedical and Diagnostic Sciences, University of Detroit Mercy School of Dentistry, Detroit, MI, USADuring gross anatomy head and neck laboratory session, one dissection group observed an abnormal anatomic variation in the posterior cranial fossa of a 94-year-old male cadaver. The internal occipital crest was not aligned with internal occipital protuberance and groove for superior sagittal sinus. It seemed that the internal occipital protuberance was shifted significantly to the right side. As a result the skull was overly stretched in order to connect with the internal occipital ridge. These internal skull variations of occipital bone landmarks can influence the location of adjacent dural venous sinuses and possibly influence cerebrospinal fluid flow. Similar anatomical anomalies have been attributed to presence of hydrocephalus and abnormalities in cisterna magna.http://dx.doi.org/10.1155/2016/7575623
spellingShingle Jae Ha Kim
Maha Ahmad
Internal Occipital Crest Misalignment with Internal Occipital Protuberance: A Case Report of Posterior Cranial Fossa Anatomic Variations
Case Reports in Neurological Medicine
title Internal Occipital Crest Misalignment with Internal Occipital Protuberance: A Case Report of Posterior Cranial Fossa Anatomic Variations
title_full Internal Occipital Crest Misalignment with Internal Occipital Protuberance: A Case Report of Posterior Cranial Fossa Anatomic Variations
title_fullStr Internal Occipital Crest Misalignment with Internal Occipital Protuberance: A Case Report of Posterior Cranial Fossa Anatomic Variations
title_full_unstemmed Internal Occipital Crest Misalignment with Internal Occipital Protuberance: A Case Report of Posterior Cranial Fossa Anatomic Variations
title_short Internal Occipital Crest Misalignment with Internal Occipital Protuberance: A Case Report of Posterior Cranial Fossa Anatomic Variations
title_sort internal occipital crest misalignment with internal occipital protuberance a case report of posterior cranial fossa anatomic variations
url http://dx.doi.org/10.1155/2016/7575623
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