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"Spontaneous" perilymph fistula: a case report.
Patrick J Collison1, Kevin C Pons
1Yankton Medical Clinic, University of South Dakota School of Medicine, Yankton, South Dakota, USA.
The Annals of Otology, Rhinology, and Laryngology
|April 29, 2004
Summary
This case report details barotrauma-induced perilymph fistula, a rare cause of sudden hearing loss. Intact evoked otoacoustic emissions aided diagnosis in a severe cochlear loss case.
Area of Science:
- Otolaryngology
- Neuroscience
- Audiology
Background:
- Barotrauma-induced perilymph fistula is an uncommon cause of sudden sensorineural hearing loss.
- Preoperative diagnosis of this condition is often challenging.
- Understanding the mechanisms is crucial for effective management.
Observation:
- Presents a surgically documented case of barotrauma-induced perilymph fistula.
- Details clinical, audiometric, radiologic, and intraoperative findings.
- Highlights the difficulty in definitive preoperative diagnosis.
Findings:
- Severe cochlear-type hearing loss was observed.
- Intact evoked otoacoustic emissions were present in the affected ear.
- This finding helped narrow the differential diagnosis.
Implications:
- The presence of intact evoked otoacoustic emissions may aid in diagnosing perilymph fistulas.
- Further research into evoked otoacoustic emissions could improve diagnostic accuracy.
- This case contributes to understanding rare causes of sudden hearing loss.