Meningioma extending to the middle ear; A case report.:A Case Report

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Meningioma is a common tumor of the central nervous system, accounting for 13-18% of all intracranial tumors. Extracranial meningiomas, especially with extension into the temporal bone, are very rare.A 56-year-old female complained of left hearing loss for 15 years. Her physical examination revealed a cholesteatoma-like mass which was seen through the tympanic membrane, and a pure tone audiogram showed left combined hearing loss. At the time of operation, a white mass was seen in the mastoid cavity and the tympanic cavity. Postoperative pathological study revealed it to be a meningioma. After the operation, CT and MRI scans showed a large mass in the middle and posterior fossas. We conclude that CT and MRI examinations are valuable when there is a possibility of tumor.
耳鼻咽喉科臨床学会の論文