Nerve.  2022 Oct;8(2):98-102. 10.21129/nerve.2022.00108.

Primary Extracranial Meningioma Mimicking Musculoskeletal Malignancy: A Case Report

• Han S
• Lee WH

• KMID: 2543244
• DOI: http://doi.org/10.21129/nerve.2022.00108

Abstract

Primary extracranial meningioma (PEM) is a very rare disease that arises outside the dural covering of the brain or spinal cord. It is essentially an extracranial tumor and can mimic musculoskeletal malignancies. A 74-year-old woman presented with a mass on the right frontotemporal scalp that had been present for 2 years. Magnetic resonance imaging revealed osteolysis in the right frontal, temporal, and sphenoid bone and involvement of the right temporalis muscle, mimicking a musculoskeletal malignancy. The mass was resected, and the confirmed histological diagnosis was primary extracranial meningothelial meningioma (World Health Organization grade I). The patient was discharged without complications, and no evidence of tumor recurrence was apparent 48 months after surgery. This case supports complete surgical excision without adjuvant therapy as the modality of choice for PEM since meningioma is radioresistant and recurrence is very rare after adequate surgical resection.

Keyword

Extracranial Meningioma; Meningioma; Primary extracranial meningioma; Musculoskeletal malignancy