ENT Case 7. Nasal cavity mass from a middle-aged male patient.

Diagnosis: Meningothelial meningioma

Extracranial Sinonasal Tract Meningiomas etiology:

–Direct extension from primary intracranial meningioma

–Metastasis from primary intracranial meningioma

–Extracranial meningioma arising from nerve sheath of cranial nerves exiting the skull

–Extracranial meningioma not associated with cranial nerves or intracranial primary

Reference: Extracranial Sinonasal Tract Meningiomas: A Clinicopathologic Study of 30 Cases With a Review of the Literature. L.D.R. Thompson, K.A. Gyure. Am J Surg Pathol 2000:24:640-650