Related Experiment Video
Updated: Aug 15, 2026
Surgical Induction of Endolymphatic Hydrops by Obliteration of the Endolymphatic Duct
Published on: January 22, 2010
Bilateral spontaneous perilymph fistulae: a diagnostic and management dilemma
A Sismanis1, G B Hughes, F Butts
1Department of Otolaryngology, Medical College of Virginia, Virginia Commonwealth University, Richmond 23298.
Insights
Bilateral perilymph fistulae are rare and challenging to diagnose, often occurring in children with ear symptoms and bone anomalies. Suspect a second fistula in the other ear if one is found and repaired, especially with a positive fistula test.
Area of Science:
- Otolaryngology
- Pediatric Otology
- Neurosurgery
Background:
- Perilymph fistulae are rare inner ear defects causing hearing loss and vertigo.
- Bilateral perilymph fistulae present unique diagnostic challenges, particularly in pediatric cases.
Observation:
- This case highlights bilateral perilymph fistulae, emphasizing their rarity and diagnostic difficulty.
- Congenital temporal bone radiographic anomalies and bilateral ear symptoms are key indicators in children.
- Absence of preceding trauma or barotrauma does not rule out perilymph fistulae.
Findings:
- Bilateral perilymph fistulae are more prevalent in pediatric populations.
- A positive fistula test in a patient with unilateral perilymph fistula warrants suspicion of contralateral involvement.
- Congenital anomalies of the temporal bone are associated with bilateral perilymph fistulae.
Implications:
- Early suspicion and diagnosis of bilateral perilymph fistulae are crucial for timely intervention.
- Identifying bilateral fistulae requires a high index of suspicion, especially in children with suggestive symptoms and radiographic findings.
- Contralateral ear evaluation is essential after unilateral perilymph fistula repair if symptoms persist or a positive fistula test is noted.
Abstract:
In this article, we present a case of bilateral perilymph fistulae. This entity is rare and always presents a diagnostic problem. Bilateral perilymph fistulae are more common in children and should be suspected when bilateral ear symptoms and congenital temporal bone radiographic anomalies are present. Previous trauma or barotrauma may be absent. When a patient manifests bilateral ear symptoms and a fistula has been identified and repaired in one ear, a second fistula should be suspected in the contralateral ear, especially if the fistula test is positive.
