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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 23:660-662, April 2002
© 2002 American Society of Neuroradiology

Case Report
HEAD AND NECK

Necrotizing Neurosarcoidosis Masquerading as a Left Optic Nerve Meningioma: Case Report

Jack W Jennings^a, Amyn M Rojiani^b, Steven S Brem^c and F. Reed Murtagh^d

^a Department of Anatomy, University of South Florida College of Medicine, Tampa, FL
^b Department of Pathology, Division of Neuropathology, University of South Florida College of Medicine, Tampa, FL
^c Department of Neurosurgery, University of South Florida College of Medicine, Tampa, FL
^d Department of Radiology, Division of Neuroradiology, University of South Florida College of Medicine, Tampa, FL

Address reprint requests to F. Reed Murtagh, MD, University Diagnostic Institute, 3301 Alumni Drive, Tampa, FL 33612

Summary: Isolated neurosarcoidosis involving the optic nerve meninges is extremely rare and is often indistinguishable from a meningioma in its anatomic site and MR imaging presentation. Characteristic findings include enhanced perineural encasement and thickening of the affected optic nerve on contrast-enhanced T1-weighted cranial MR imaging studies. We present the case report of a patient with isolated necrotizing neurosarcoidosis of the left optic nerve, with clinical and MR imaging findings strongly suggestive of a preoperative diagnosis of a meningioma.