Síndrome de dehiscencia del canal semicircular superior: a propósito de un caso / Canal dehiscence syndrome of the superior semicircular: in a case purpose

El síndrome de dehiscencia de canal semicircular superior (DCSS) es una patología descrita en 1998 por Minor y cols, presenta síntomas diversos incluido vértigo inducido por el sonido, hipoacusia y autofonía por la falta de cobertura ósea en dicho canal. El diagnóstico se basa en la clínica y la confirmación se obtiene mediante la tomografía computarizada de peñasco. El tratamiento será expectante o reparación quirúrgica de la continuidad si la clínica es incapacitante. En este artículo se presenta un caso clínico de DCSS con síntomas auditivos y vestibulares al emitir el fonema "mmm".

The superior semicircular dehiscence síndrome is a pathology described en 1998 by Minor et al. Which presents several symptoms incluid sound induced vértigo, hearing loss and autophony due to bone dehiscense of this semicircular canal. The diagnosis was based on clinical and confirmation is given by the temporal bone CT. Treatment is expectant or surgical repair of continuity if the clinic is disabling. In this paper we present a case of DCSS with auditory and vestibular symptoms in issuing the phoneme "mmm".

Tullio Phenomenon Following Spontaneous Intralabyrinthine Gross Hemorrhage / 대한평형의학회지

Tullio phenomenon is a pattern of sound induced unsteadiness, imbalance or vertigo, associated with disturbances of oculomotor and postural control. As a possible cause of sudden sensorineural hearing loss, intralabyrinthine gross hemorrhage has been reported in subjects with bleeding tendency. We report a case of spontaneous intralabyrinthine hemorrhage followed by presentation of Tullio phenomenon. A 35-year-old man presented with sudden left side hearing loss and vertigo. Audiometry results indicated left total deafness and magnetic resonance images revealed left intralabyrinthine hemorrhage. At 1 month after hearing loss, sound and pressure-induced vertigo and disequilibrium newly developed. Follow-up images indicated signs of fibrosis in the left labyrinth and nystagmography results showed induction of nystagmus according to the stapedial reflex. This case suggests possibility of Tullio phenomenon in sudden sensorineural hearing loss patients.