Med Hypotheses 2020 Nov 28;144:110223. Epub 2020 Aug 28.
Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University Medical Center, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea. Electronic address:
Chronic otitis media with cholesteatoma can cause erosion of the dense labyrinthine bone overlying the inner ear organs, and this labyrinthine fistula allows pressure or mass-induced motion of the underlying perilymphatic and endolymphatic compartment, evoking vestibular symptoms. While the mechanism of a positive fistula test, which is conducted by increasing or decreasing the external auditory canal pressure, has been well established, the mechanism underlying positional nystagmus in labyrinthine fistula has not been discussed yet. In the present study, we propose a new hypothesis accounting for positional nystagmus in labyrinthine fistula involving the lateral semicircular canal (LSCC), i. Read More