Intraparenchymal meningioma originating from underlying meningioangiomatosis - Case report and review of the literature

The authors present the case of a 20-year-old woman with right-sided tempor al intraparenchymal meningioma originating from underlying meningioangiomat osis. The patient manifested temporal-type seizures as the initial symptom. She had no stigmata of neurofibromatosis Type 2. Neuroradiological studies revealed an intraaxial, contrast-enhancing lesion in the right temporal lo be. After gross-total removal of the tumor, histological examination reveal ed a transitional meningioma with surrounding neural parenchyma and feature s of meningioangiomatosis. Although there were no signs of anaplasia, necro sis, or increased mitosis, tumor islands were observed in the adjacent neur opil. The rare association of meningioangiomatosis and meningioma is discus sed, along with radiological and surgical findings.