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Inicio Acta Otorrinolaringológica Española Schwannoma of the External Auditory Canal: An Exceptional Location
Journal Information
Vol. 58. Issue 4.
Pages 169-170 (January 2007)
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Vol. 58. Issue 4.
Pages 169-170 (January 2007)
Case reports
Schwannoma of the External Auditory Canal: An Exceptional Location
Schwannoma de conducto auditivo externo: una localización excepcional
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Darío Moraisa,
Corresponding author
dmoraisp@usuarios.retecal.es

Correspondence: Plaza Juan de Austria, 3, 3.° D. 47006 Valladolid. España.
, Jaime Santosa, Marta Alonsoa, Yolanda Ovelarb
a Servicio de Otorrinolaringología, Hospital Clínico Universitario, Valladolid, Spain
b Servicio de Anatomía Patológica, Hospital Clínico Universitario, Valladolid, Spain
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Solitary schwannoma is a benign, encapsulated tumour of Schwann cell origin, therefore the olfactory and optic nerves are never affected. About 25%–45% of all schwannomas occur in the head and neck but schwannoma of the external auditory canal is a rare finding, and we have found only 6 previous cases reported in the literature world-wide. Our patient was discovered by chance during a stapedectomy because the tumour was sited in the external auditory canal without distorting it.

Key words:
Schwannoma of external auditory canal
Benign encapsulated tumour
Excepcional location

El schwannoma es un tumor benigno encapsulado que puede afectar a cualquier nervio del organismo que tenga células de Schwann, nunca al nervio olfatorio ni el óptico. Un 25–45% aparece en cabeza y cuello, pero en el conducto auditivo externo es excepcional, y solamente se han publicado en la literatura mundial otros 6 casos previos. Presentamos un caso descubierto accidentalmente al realizar la incisión en un conducto normal, no abombado, durante una estapedectomía.

Palabras clave:
Schwannoma de conducto auditivo externo
Tumor benigno encapsulado
Localización excepcional

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