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Case #12

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Demographics: 7 years old, Male
Indication: Bilateral conductive hearing loss

Case #12

Findings

  • Areas of bony dehiscence involving the bilateral superior and posterior semicircular canals, which are located at the superior margins of the posterior semicircular canals and involve the posterior limbs of the superior semicircular canals
  • Otherwise normal appearance of the temporal bones

Diagnosis

Semicircular canal dehiscence

Key Imaging Features

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Differential Diagnosis

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Pearls

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Discussion

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References

  • Ho ML, Moonis G, Halpin CF, Curtin HD. Spectrum of third window abnormalities: semicircular canal dehiscence and beyond. AJNR Am J Neuroradiol 2017; 38(1): 2-9.

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