Perilymphatic fistula

A perilymphatic fistula (also known as a labyrinthine fistula) is a pathologic communication between the fluid-filled space of the inner ear and the air-filled space of the middle ear, most commonly occurring at either the round or oval window.

The primary manifestations of perilymphatic fistulisation are sudden or progressive fluctuating sensorineural hearing loss and vertigo. Other symptoms that may be present include tinnitus, disequilibrium, and aural fullness.

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Article information

rID: 6887
System: Head & Neck
Section: Signs
Synonyms or Alternate Spellings:
  • Perilymph Fistula Sign
  • Labyrinthine fistula
  • Perilymphatic fistula (PLF)
  • Perilymph fistula
  • Perilymphatic fistulas
  • Labyrinthine fistulas

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