Meningiomas of the Internal Auditory Canal: Two Case Reports
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Meningiomas of the Internal Auditory Canal: Two Case Reports
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| Id. |
16432363 |
| Idioma |
inglés
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| Titulo |
Meningiomas of the Internal Auditory Canal: Two Case Reports |
| Autor(es) |
Magliulo, Giuseppe
Zardo, Francesco
Bertin, Serena
D'Amico, Raffaello
Savastano, Vincenzo
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| Localización |
http://www.pubmedcentral.gov/articlerender.fcgi?artid=1654773
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| Versión |
1.0 |
| Estado |
Final
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| Descripción |
Meningiomas represent 3 to 12% of the tumors that involve the cerebellopontine angle and internal auditory canal (IAC). Intracanalicular meningiomas, however, are rare. Only 10 well-documented cases have been reported in the English literature. The differential diagnosis includes acoustic neuromas, facial nerve neuromas, hemangiomas, lipomas, and meningiomas. We report two new cases of intracanalicular meningioma. Both patients had unilateral tinnitus. In case 1, the patient also experienced sensorineural hearing loss with unilateral tinnitus. In case 1, the lesion appeared hyperintense on T1-weighted and hypointense on T2-weighted magnetic resonance images. In case 2, the patient had an enhancing lesion in the right IAC. The tumors were moderately cellular, and meningeal whorls and meningothelial inclusions were present. Immunohistochemical staining revealed the tumors to be positive for epithelial membrane antigen (EMA) and negative for S-100 protein. The radiologic findings that help distinguish a meningioma from other lesions are reviewed.
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| Palabras clave |
Case Reports
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| Tipo de recurso |
Text
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| Tipo de Interactividad |
Expositivo
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| Nivel de Interactividad |
muy bajo
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| Audiencia |
Estudiante
Profesor
Autor
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| Estructura |
Atomic |
| Coste |
no
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| Copyright |
sí
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© 2002 by Thieme Medical Publishers, Inc., 333 Seventh Avenue, New York, NY 10001, USA. |
| Requerimientos técnicos |
Browser: Any
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| Fecha de contribución |
03-dic-2006 |
| Contacto |
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