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Vol. 57. Issue 8.
Pages 345-349 (October 2006)
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Vol. 57. Issue 8.
Pages 345-349 (October 2006)
Disociación clínica-tamaño tumoral en el neurinoma del acústico: ¿realidad o problema de medida?
Clinical tumoral size dissociation in acoustic neuroma: reality o measure distortion?
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L. del Río1
Corresponding author
ldelrio@wanadoo.es

Correspondencia: Laura del Río Arroyo Servicio de ORL. Hospital Universitario La Paz Paseo de la Castellana, 261 28046 Madrid
, L. Lassaletta, C. Alfonso, M.J. Sarriá, J. Gavilán
Servicio de Otorrinolaringología. Hospital Universitario La Paz. Madrid
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Resumen
Introducción

Hemos analizado: 1) las frecuencias audiométricas más afectadas en el neurinoma del acústico (NA), 2) el porcentaje de pacientes con audición normal y con sordera súbita; 3) si hay correlación entre el tamaño tumoral y la hipoacusia; y 4) la relación entre hallazgos clínicos, radiológicos y audiométricos.

Material y métodos

Estudio retrospectivo de 81 pacientes intervenidos por NA.

Resultados

El mayor umbral en el oído del tumor se encontró a 8000 Hz, y la mayor diferencia interaural a 4000 Hz. El porcentaje de pacientes con audición normal y con sordera súbita fue 2,5% y 9%, respectivamente. No encontramos asociación entre tamaño tumoral e hipoacusia, parálisis facial o alteración del V par. Hallamos asociación entre hipoacusia y alteración del V par, y entre hipoacusia y parálisis facial.

Conclusiones

La relación entre hipoacusia y alteración del V par, y entre hipoacusia y parálisis facial es independiente del volumen tumoral.

Palabras clave:
Neurinoma del acústico
Hipoacusia
Volumen tumoral
Parálisis facial
Abstract
Introduction

In this study we have analyzed (i) the audiometric frequencies more often affected in acoustic neuroma (AN), (ii) the percentage of patients presenting normal hearing and those with sudden hearing loss, (iii) if there is a correlation between tumor size and hearing loss, and (iv) the relationship between clinical and radiological parameters and audiological data.

Methods and Material

Retrospective study of 81 patients undergoing surgical removal of a sporadic AN.

Results

The highest threshold in the tumor´s ear was found at 8000 Hz, and the highest interaural difference at 4000 Hz. The percentage of patients presenting normal hearing and sudden hearing loss was 2.5% and 9%, respectively. No significant association was found between tumor size and hearing loss, preoperative facial palsy or Vth cranial nerve deficit. There was a significant association between the degree of hearing loss and Vth cranial nerve deficit, and between hearing loss and preoperative facial palsy.

Conclusions

The association between hearing loss and Vth cranial nerve deficit, and between hearing loss and preoperative facial palsy is independent the size of the tumour.

Key words:
Acoustic neuroma
Hearing loss
Tumor size
Facial palsy

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