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StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024 Jan-.

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Optic Nerve Sheath Meningioma

Optic Nerve Sheath Meningioma. Upper axial contrast-enhanced MRI reveals a "tram-track" sign in a patient with optic nerve sheath meningioma, where the thickened optic nerve sheath enhances, creating a tram-track appearance. The lower coronal MRI displays the "bull's eye" appearance of the optic nerve, characterized by a hyperintense ring due to the thickened enhancing optic nerve sheath meningioma. Contributed by BCK Patel, MD, FRCS

From: Optic Nerve Sheath Meningioma

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