Abstract
Meningiomas account for 13% to 18% of all primary intracranial tumors and are the second most common tumor of the temporal bone. Generally, meningiomas originate mainly from intracranial meninges. Extracranial meningiomas are rare. Many meningiomas located in the temporal area are not detected until symptoms of the cranial nerves appear ; therefore, it is often difficult to identify their origin. We experienced a case of a meningioma originating from the intracranial meninges that infiltrated the mastoid. We treated it surgically using a postauricular approach. The meningioma was resected completely except for the portion of adhesion to the posterior cranial fossa dura. After surgery, we decided not to perform radiotherapy due to the patient's age, PS, and the results of histopathology. Therefore, we chose to observe the patient regularly with radiological imaging.
