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.
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M. Casale, Y. Errante, L. Sabatino, A. Incammisa, F. Salvinelli, C.C. Quattrocchi
Perilimphatic fistula test: a video clip demonstration
Eur Rev Med Pharmacol Sci
Vol. 18 - N. 23