Complete Restored Hearing Loss after Excessive Nose Blowing with Various CT Findings

다국어 초록 (Multilingual Abstract)

A perilymphatic fistula (PLF) is defined as leakage of perilymph with several possible causessuch as superior canal dehiscence through trauma, temporal bone fracture, or sudden pressurechange (e.g., skydiving or scuba diving). Pneumolabyrinth can result from temporal bone fractureafter trauma, or sudden pressure change in the middle ear or cerebrospinal fluid, such asexcessive nose blowing or Valsalva maneuver. A PLF and pneumolabyrinth may occur withouttrauma, associated with a sudden pressure change in the middle ear. We report two cases ofPLF followed by pneumolabyrinth and one case of suspicious PLF without pneumolabyrinthafter excessive nose blowing. All three cases were diagnosed as having sensorineural hearingloss and the patients recovered completely after conservative treatment. We report various CTfindings of pneumolabyrinth and PLF, from normal CT findings to air pockets in the labyrinthand soft tissue density around the stapes.

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