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.

Clinical presentation

Symptoms of perilymphatic fistula may include:

  • sensorineural hearing loss
  • vertigo
  • nausea
  • tinnitus
  • spatial disorientation
  • dizziness
  • ear fullness
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