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Vol. 56. Issue 4.
Pages 171-175 (April 2005)
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Vol. 56. Issue 4.
Pages 171-175 (April 2005)
Dehiscencia del conducto semicircular superior: presentación de un caso y revisión bibliográfica
Dehiscence of the superior semicircular canal: report of a case and bibliography review
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J. Montojo Woodeson
Corresponding author
josemontojo@hotmail.com

Correspondencia: José Montojo Woodeson Leopoldo Alas Clarín, 2, 1º C - 28035 Madrid.
, T. Heitzmann, L. Rubio Morales
Unidad ORL. Hospital Ruber Internacional. Madrid
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Resumen

Presentamos un caso de dehiscencia del conducto semicircular superior (DCSS) en una paciente de 37 años de edad que nos consultó por presentar episodios de vertigo subjetivo en respuesta a los sonidos intensos (fenómeno de Tullio). La audiometría, electronistagmografía, timpanometría y reflejos estapediales eran normales y el test de la fistula negativo. La TC mostró una ausencia de hueso cubriendo el conducto semicircular superior (CSS) del oído derecho y normalidad del izquierdo. Al presentarle sonidos intensos en ambos oídos, se desencadenaba vértigo sólo en el oído derecho, sin llegar a objetivarse nistagmo.

Palabras clave:
Conducto semicircular
Vértigo
Hueso temporal
Defectos del tegmen
Abstract

We present a case of deficiency of the superior semicircular canal (SSCD) in a 37 years old patient that came to us because of episodes of subjective vertigo in response to intense sounds (Tullio phenomenon). The audiometry, electronistagmography, timpanometry and stapes reflexes were normal and the fistula test was negative. The CT scan showed an absence of bone overlying the superior semicircular canal (SSC) of the right ear and the left ear was normal. When both ears were exposed to intense sounds, only the right one presented vertigo was, without nystagmus.

Key words:
Superior semicircular canal
Vertigo
Temporal bone
Tegmental defects
Minor syndrome

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