Perilimphatic fistula test: a video clip demonstration

M. Casale, Y. Errante, L. Sabatino, A. Incammisa, F. Salvinelli, C.C. Quattrocchi

Otolaryngology and Radiology; University Campus Bio-Medico of Rome, Rome, Italy. m.casale@unicampus.it

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• Otorhinolaryngology

Perilymphatic fistula (PLF) is an abnormal condition in which a communication is present between the perilymphatic space of the inner ear and the middle ear or mastoid, secondary to a dehiscence in the otic capsule, oval or round window.

LF may induce hearing loss, tinnitus, aural fullness, vertigo, disequilibrium, or a combination of these symptoms; the vagueness of symptoms caused by PLF and the lack of specificity of clinical signs and symptoms make the diagnosis elusive.
We report a video of a positive PLF test induced by the application of pressure on the tragus, just anterior to the left external auditory canal in a patient with cholesteatoma and PLF of lateral semicircular canal confirmed by CT scan imaging.

https://www.youtube.com/watch?v=x5MhSILF9O4

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