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Vol. 58. Issue 2.
Pages 70-72 (January 2007)
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Vol. 58. Issue 2.
Pages 70-72 (January 2007)
Intra-Labyrinthine Schwannoma: Two-Cases Report
Schwannoma intralaberíntico: a propósito de dos casos
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Eduardo Maseda
Corresponding author
maseda99@hotmail.com

Correspondence: Pl. Eduardo Úrculo, 3, 2.° J. 33001 Oviedo. Asturias. España.
, Armando Ablanedo, Rafael Blanco, Celso Díaz, Adelaida Martín
Servicio de Otorrinolaringología, Hospital San Agustín, SESPA, Avilés, Asturias, Spain
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Intralabyrinthine schwannomas are uncommon tumours that arise from neural elements in distal branches of the 8th cranial nerve thus they are confined to or have arisen from the vestibule, the semi-circular canals, or the cochlea. The most common presenting symptom is progressive sensory neural hearing loss with or without tinnitus and vestibular symptoms. The diagnostic procedure of choice is gadolinium-enhanced magnetic resonance imaging. Most of these patients can be managed with observation. The indications for surgery are limited. We present 2 patients with a diagnosis of intralabyrinthine schwannoma. A discussion of the management of the intralabyrinthine schwannoma follows.

Key words:
Intralabyrinthine schwannoma
Vestibular schwannoma
Cochlear schwannoma
Hearing loss
Magnetic resonance imaging

Los schwannomas intralaberínticos son tumores benignos muy infrecuentes que surgen a partir de elementos neurales de las ramas terminales del VIII par craneal, que afectan primariamente al vestíbulo, los conductos semicirculares y/o la cóclea. La sintomatología más frecuente consiste en hipoacusia unilateral progresiva con o sin acufenos. Pueden asociarse trastornos del equilibrio. El método habitual de diagnóstico es la resonancia magnética con contraste paramagnético (gadolinio). El tratamiento es conservador en la mayoría de los pacientes, y se reserva el tratamiento quirúrgico para indicaciones muy precisas. Presentamos 2 casos de schwannoma intralaberíntico diagnosticados en nuestro servicio y discutimos el tratamiento de esta enfermedad.

Palabras clave:
Schwannoma intralaberíntico
Schwannoma vestibular
Schwannoma coclear
Hipoacusia
Resonancia magnética

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