Posterior semicircular canal dehiscence: a histopathologic human temporal bone study

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology
Shigenobu NomiyaMichael M Paparella

Abstract

Posterior semicircular canal dehiscence has been shown to cause ear symptoms. To evaluate the incidence of dehiscence of the posterior semicircular canal, thin bone overlying the posterior semicircular canal, and the normal development of the distance between the posterior semicircular canal and posterior cranial fossa. The shortest distance between the posterior semicircular canal and posterior cranial fossa was measured in 1,051 adult human temporal bones (557 cases), and temporal bones with a distance less than 0.1 mm were evaluated. The shortest distance also was measured in 4 fetal temporal bones (2 cases) and 110 temporal bones from children. Of the 1,051 temporal bones, 23 temporal bones (2.2%) had a distance less than 0.1 mm between the posterior semicircular canal and posterior cranial fossa. Two temporal bones (0.2%) had posterior semicircular canal dehiscence, and 2 temporal bones had microfractures in the thin bone; however, related clinical symptoms were not confirmed. In children, the distance between the posterior semicircular canal and the posterior cranial fossa increased with age (rho = 0.68, p < 0.01). The histopathologic incidence of posterior semicircular canal dehiscence was lower than the previous radiogr...Continue Reading

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Citations

Feb 2, 2013·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Jaime WhyteMiguel Ángel Crovetto
Jun 21, 2013·Surgical and Radiologic Anatomy : SRA·Ana Isabel CisnerosMiguel Ángel Crovetto
Jun 25, 2015·Acta Oto-laryngologica·Zachary W BearAnthony A Mikulec
Aug 27, 2016·AJNR. American Journal of Neuroradiology·M-L HoH D Curtin
Jul 3, 2017·Audiology & Neuro-otology·Jaime WhyteMiguel A Crovetto
Jun 13, 2012·The Laryngoscope·Saman KiumehrHamid R Djalilian
Jan 25, 2020·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Joshua A LeeHabib G Rizk
Mar 17, 2020·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Joshua A LeeHabib G Rizk

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