Oriana C. García-Díaz, Departamento de Anatomía Patológica, Hospital General 450, Ministerio de Salud, Durango, Dgo., México
Rebeca Ramos-Sánchez, Departamento de Neuro-Radiología, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Cuidad de México, México
Ana L. Calderón-Garcidueñas, Departamento de Neuropatología, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Cuidad de México, México
Roberto García Quintero, Departamento de Neurología, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Cuidad de México, México
Meningiomas are usually slow-growth tumors that arise from arachnoid cells. Extension of a cerebellopontine angle (CPA) meningioma to the external auditory canal is uncommon. A 64-year-old woman presented with unilateral and progressive hearing loss and tinnitus. A tumor was observed protruding into the external auditory canal. Magnetic resonance imaging showed a CPA tumor with extension to the middle ear, and external auditory canal. A subtotal resection (85%) was performed. Finally, on discharge from the hospital, she presented only a right sixth cranial nerve palsy. Meningiomas of the pontocerebellar angle can present with unilateral and progressive hearing loss and may extend to the external auditory canal.
Keywords: Meningioma. External auditory canal. Cerebellopontine angle.