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AJNR: American Journal of Neuroradiology logoLink to AJNR: American Journal of Neuroradiology
. 1995 Sep;16(8):1703-6.

High-resolution CT of mastoid sinus pneumocele with external auditory canal stenosis.

R Lichtenberg 1, E J Russell 1
PMCID: PMC8337767  PMID: 7502977

Abstract

A 34-year-old man presented with tinnitus and conductive hearing loss. CT demonstrated an expansile, air-containing cavity contiguous with mastoid air cells, narrowing the external auditory canal. This is a case of symptomatic pneumocele resulting in an air collection beneath external canal lining, possibly related to an abnormality in mastoid fusion.

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