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Vol. 55. Issue 3.
Pages 126-130 (March 2004)
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Vol. 55. Issue 3.
Pages 126-130 (March 2004)
Lipomas de ángulo pontocerebeloso y conducto auditivo interno: serie de 4 casos clínicos y revisión de la literatura
Cerebellopontine angle and internal auditory canal lipomas: report of four cases and review of the literature
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4780
N. Rodríguez Pradoa
Corresponding author
nuriarp74@hotmail.com

Correspondencia: C/ Puerto Pajares 12, 5º B. 33011 Oviedo. Asturias
, J.L. Llorente Pendás, J.R. Gómez Martínez, P. Aldama Barahona, C. Suárez Nieto
Servicio Orl Del Hospital Universitario Central De Asturias. Oviedo
J.A. Fernández Martínez*, J.J. Díaz Argüero*
* Servicio orl del hospital da costa. burela. lugo
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Article information
Resumen
Objetivo

Los lipomas son tumores excepcionales a nivel del Ángulo Pontocerebeloso (APC) o del Conducto Auditivo Interno (CAI). Se evalúan las características clínicas, histológicas y radiológicas de los casos diagnosticados en nuestro hospital y los resultados del tratamiento conservador versus quirúrgico

Material y métodos

Se describen 4 casos de lipomas de APC y/o CAI y se revisan los 99 recogidos previamente en la literatura

Resultados

El síntoma más frecuente fue el acúfeno unilateral (100%). En la RNM todas las lesiones presentaron hiperintensidad en T1 e hipo/isointensidad en T2. Dos pacientes fueron intervenidos sin lograr la resección completa y provocando secuelas neurológicas adicionales. Los otros dos fueron controlados anualmente mediante RNM. En ningún caso se detectaron cambios clínico-radiológicos relevantes durante el período medio de seguimiento (4,2 años)

Conclusiones

A nivel del APC y/o CAI la cirugía de los lipomas cuenta con una elevada morbilidad dada su abundante vascularización y su íntima adherencia a los tejidos circundantes. La RNM es la técnica de elección para el diagnóstico diferencial de lesiones con esta localización

Palabras clave:
Lipoma
Ángulo Pontocerebeloso
Conducto Auditivo Interno
Abstract
Aim

Lipomas are exceptional tumors at the Cerebellopontine Angle (CPA) or the Internal Auditory Canal (IAC). We evaluate clinical, histological and radiological characteristics of the cases diagnosed in our Hospital and the results of conservative versus surgical treatment

Material and methods

We report 4 cases of CPA and/or IAC and review 99 previously reported in the literature

Results

Unilateral tinnitus was the most frequent symptom (100%). All lesions showed hyperintensity on T1 and hypo/isointensity on T2 – weighted MNR images. Two patients underwent a retro-sigmoidal approach without complete tumoral resection and with additional neurological consequences. Another two cases were followed up by annual MNRs. During the follow-up period (4,2 years average), neither clinical nor radiological changes were detected

Conclusion

The surgical resection of CPA y/o IAC lipomas is associated to a significant morbidity due to the high vascularization and the dense adherence of these lesions to the surrounding tissues. The MNR is the suitable technique for differential diagnosis between lesions at this location

Key words:
Lipoma
Cerebellopontine Angle
Internal Auditory Canal

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