Temporal bone histopathology: Superior semicircular canal dehiscence

Laryngoscope Investigative Otolaryngology
Brian M LinAlicia M Quesnel

Abstract

To present a histopathological case of a 91-year-old woman who was diagnosed with superior semicircular canal dehiscence postmortem. The patient was a registered donor with the National Temporal Bone Donor Program at the NIDCD National Temporal Bone, Hearing and Balance Pathology Resource Registry. Computed tomography imaging was performed on each temporal bone. The temporal bones were decalcified with ethylenediaminetetracetate and embedded in celloidin, and tissue sections were stained with hematoxylin and eosin. Horizontal sections were taken through the left temporal bone, and vertical sections were taken through the right temporal bone. Histopathological sections taken through the right temporal bone demonstrated no bone between the membranous wall of the superior semicircular canal and the middle fossa dura. There was no histopathological evidence of superior semicircular canal dehiscence in the left temporal bone; however, a small dehiscence would not be identified on horizontal sections. Microcavitations were observed in the common crus of the left temporal bone. This reports describes the case of a woman who was diagnosed with superior semicircular canal dehiscence postmortem. The presence of microcavitations in the te...Continue Reading

References

Apr 3, 1998·Archives of Otolaryngology--head & Neck Surgery·L B MinorD S Zee
Feb 19, 2000·Archives of Otolaryngology--head & Neck Surgery·J P CareyG T Nager
Feb 9, 2012·The Annals of Otology, Rhinology, and Laryngology·Michael TeixidoSaumil N Merchant
Dec 11, 2017·Audiology & Neuro-otology·Takefumi Kamakura, Joseph B Nadol

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BETA
light microscopy

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