[Extracranial meningioma presenting as a polyp of the outer ear canal].

Meningiomas are the most frequent benign intracranial tumor. Up to 20% of these neoplasms may eventually extend beyond the skull, particularly when tumor spread affects the temporal bone. We report a clinicopathological observation of an extracranial meningothelial meningioma that was diagnosed morphologically using immunohistochemical techniques. The tumor presented as polyp in the ear canal of a 70-year-old woman who had a history of ear disease and seizures and was under medical treatment. The growth was associated with a right temporal lobe tumor involving the petrosal bone that had been detected 6 years earlier on computed axial tomography.