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[Extracranial meningioma presenting as a polyp of the outer ear canal]
F J Vera-Sempere1, J Jaén, J V Salom
1Servicio de Anatomía Patológica, Hospital Universitario La Fe, Valencia, España.
Abstract:
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.
Insights
This study details an extracranial meningioma, a rare extension of a common brain tumor, found as an ear canal polyp. Diagnosis utilized immunohistochemistry, highlighting a challenging clinical presentation.
Area of Science:
- Neurosurgery
- Oncology
- Pathology
Background:
- Meningiomas are the most common benign primary intracranial tumors.
- Extracranial extension occurs in up to 20% of meningiomas, often involving the temporal bone.
- Early detection and accurate diagnosis are crucial for managing intracranial neoplasms.
Observation:
- A case of an extracranial meningothelial meningioma presenting as an ear canal polyp is described.
- The patient, a 70-year-old woman, had a history of ear disease, seizures, and a previously detected temporal lobe tumor.
- The tumor involved the petrosal bone and extended externally.
Findings:
- Morphological diagnosis was confirmed using immunohistochemical techniques.
- The extracranial polyp represented a spread from an intracranial meningioma.
- The tumor demonstrated characteristic meningothelial features.
Implications:
- This case highlights the importance of considering extracranial extension in meningioma diagnosis.
- Extracranial meningiomas require tailored diagnostic and treatment strategies.
- Understanding tumor spread patterns is vital for neurosurgical interventions.