Simultaneously Occurring Oligodendroglioma and Meningioma: A Rare Synchronous Primary Brain TumorsCase Report and Literature Review


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Abstract

The coexistence of 2 or more primary brain tumors is a relatively rare clinical entity in neurosurgery. We report a 55-year-old woman with 2 different mass lesions in the right frontal lobe and the vertex. The woman presented with chronic headache and urinary incontinance. She underwent an initial right frontal craniotomy and a subsequent right parietal craniotomy 1 year later for resection of the mass lesion located at the vertex. The histologic diagnosis of the right frontal lesion was oligodendroglioma (World Health Organization grade II) and the diagnosis (World Health Organization grade I) for the second lesion was fibrous meningioma. After the initial operation, the patient received radiotherapy for oligodendroglioma and then followed up with serial imaging studies. Multiple primary intracranial tumors of different histologic types not due to radiotherapy or phacomotosis are rare, and simultaneously occurring oligodendroglioma and meningioma in the same individual at different sites is much rarer. Although much speculation exists regarding the origin of multiple tumors of different cell types, chance alone is probably applicable for tumors in different lobes or hemispheres.

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