| Anatomical feature of the middle cranial fossa in fetal periods: Possible etiology of superior canal dehiscence syndrome. | |
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MedLine Citation:
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PMID: 22201523 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Abstract Conclusion: Different from adults, the superior semicircular canal (SSC) protrudes into the cranium during the fetal period. This might cause adhesion of the membranous labyrinth to dura as the bony labyrinth develops much later than the membranous labyrinth. This adhesion interferes with ossification and leads to a bony defect in the SSC. Objectives: The purpose of this study was to investigate a possible etiology of superior canal dehiscence syndrome (SCDS) from a view point of ontogeny. Methods: Forty-two adult cadavers and 4 fetal cadavers were used for macroscopic observation of the middle cranial fossa (MCF). In addition, six fetuses underwent computed tomography (CT) examinations. The volume data of the CT obtained from four adults were also used for comparison. Using these CT data, we investigated the anatomic relationship between the MCF and SSC. Results: The SSC and the cochlea in fetuses protruded into the cranium in macroscopic anatomy and CT examination. On the other hand, the SSC of all adults was completely or mostly buried in the temporal bone. |
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Authors:
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Naoto Takahashi; Atsunobu Tsunoda; Satoshi Shirakura; Ken Kitamura |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-12-27 |
Journal Detail:
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Title: Acta oto-laryngologica Volume: - ISSN: 1651-2251 ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2011-12-28 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0370354 Medline TA: Acta Otolaryngol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Otolaryngology, Tokyo Medical and Dental University , Tokyo , Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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