perilymphatic fistula


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Related to perilymphatic fistula: Perilymph fistula, labyrinthine concussion

perilymphatic fistula

a fistula between the vestibule of the inner ear and the middle ear through which perilymph can leak, resulting in auditory and vestibular disturbances; common sites for perilymphatic fistula are through or around the oval window including through or around the footplate of the stapes or through the round window through the round window membrane.
Farlex Partner Medical Dictionary © Farlex 2012

per·i·lym·phat·ic fis·tu·la

(per'i-lim-fat'ik fis'chū-lă)
A fistula between the vestibule of the inner ear and the middle ear through which perilymph can leak, resulting in auditory and vestibular disturbances; common sites for perilymphatic fistula are the oval window through or around the footplate of the stapes or the round window through the round window membrane.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

perilymphatic fistula

A canal through which inner ear fluid may leak into the middle ear that may produce sudden hearing loss, tinnitus, or vertigo. The lesion, which can arise congenitally, after trauma, or by erosion, is one of the few examples of sensorineural hearing loss that can be repaired with surgery to the cochlear aqueduct.
See also: fistula
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
Perilymphatic fistula: surgical experience in the United States.
Surgical management of perilymphatic fistula: a Portland experience.
Sneezing and Perilymphatic Fistula of the Round Window: Case Report and Systematic Review of The Literature.
Clinical characteristics and hearing recovery in perilymphatic fistulas of different etiologies.
If ossicular damage is suspected but there is no evidence of a perilymphatic fistula or damage to the stapes footplate, then the timing of surgical intervention is elective.
Recommendations re controversial with respect to analogous conditions associated with perilymphatic fistula, such as congenital lesions and barotrauma.
Pneumolabyrinth resulting from perilymphatic fistula has also been associated with barotrauma, iatrogenic injury, head trauma, and chronic ear disease; it can also develop spontaneously.
Middle ear exploration revealed that clear fluid was emanating from the round window niche in a manner consistent with the presence of a perilymphatic fistula. This was repaired with tragal perichondrium and bolstered with Gelfoam.