title: Perilimphatic fistula test: a video clip demonstration.
abstract: 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.
authors.affiliation: Otolaryngology and Radiology; University Campus Bio-Medico of Rome, Rome, Italy. m.casale@unicampus.it.
authors.forename: M
authors.initials: M
authors.lastname: Casale
authors.forename: Y
authors.initials: Y
authors.lastname: Errante
authors.forename: L
authors.initials: L
authors.lastname: Sabatino
authors.forename: A
authors.initials: A
authors.lastname: Incammisa
authors.forename: F
authors.initials: F
authors.lastname: Salvinelli
authors.forename: C C
authors.initials: CC
authors.lastname: Quattrocchi
mesh_terms: D000368:Aged; D003052:Cochlear Aqueduct / Q000473:pathology*; D005402:Fistula / Q000150:complications / Q000175:diagnosis*; D034381:Hearing Loss / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D008297:Male; D014717:Vertigo / Q000175:diagnosis / Q000209:etiology; D014741:Video Recording