Intraosseous Meningioma

Case Report

Abstract

 An 82-year-old female was admitted with slowly progressive aphasia and right hemiparesis, accompanied by a hard, 5 × 5 cm subcutaneous swelling in the left frontotemporal region. Plain X-ray film showed a well-circumscribed round radiolucency in the left pterional region. Computed tomography (CT) scans showed an intraosseous mass lesion, homogeneously enhanced postcontrast, extending to the intracranial cavity. Bone CT demonstrated a concave appearance and partial destruction of the inner table, strongly suggesting an intradiploic origin of the tumor. Left carotid angiography revealed the mass supplied by the middle meningeal artery. Left frontotemporal craniectomy demonstrated that the inner surface of the skull was destroyed, and the dura was compressed but not invaded. Histological examination found meningotheliomatous meningioma with many psammoma bodies.