An unexpected diagnosis of malignant supratentorial intraparenchymal cystic meningioma mimicking high-grade glioma: case report and literature review.

Meningiomas are generally dura-based extra axial tumours without cystic components, whereas high-grade gliomas are intra-axial with or without cystic component. This case describes an adult female who presented with clinical and radiological features suggestive of a high-grade astrocytoma; however, histology diagnosis was papillary meningioma (World Health Organization Grade III). A 58-year-old female presented with a 4-month history of recurrent generalized tonic-clonic seizures and a 1-week history of altered sensorium.