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Meningioangiomatosis (MA) is a rare malformation or hamartomatous lesion in the central nervous system, characterized by a plaque-like mass within the leptomeninges and cerebral cortex. An even rarer condition is MA complicated with meningiomas. We herein report a case of meningioma associated with MA that might be erroneously interpreted as a higher-grade lesion or an invasion by preoperative radiologic and postoperative histological examinations.

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