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AJNR - American Journal of Neuroradiology

Published ahead of print on November 16, 2007
doi: 10.3174/ajnr.A0876

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Atypical Cystic Meningioma of the Trigeminal Nerve in a Pediatric Patient

K. Obeng^a, Z. Rumboldt^a, G. Tuite^b, C.T. Welsh^c, S. Patel^b and M.V. Spampinato^a

^a Department of Radiology, Medical University of South Carolina, Charleston, SC
^b Department of Neurosurgery, Medical University of South Carolina, Charleston, SC
^c Department of Pathology, Medical University of South Carolina, Charleston, SC

View larger version (44K): [in this window] [in a new window]   Fig 1. A–C, Axial T2-weighted (A and B) and axial postcontrast T1-weighted (C) images demonstrate a dumbbell-shaped extra-axial mass in the Meckel cave (short arrows) and in the left prepontine cistern (long arrows).

View larger version (70K): [in this window] [in a new window]   Fig 2. A, The concentric structures (arrows) typical of a meningioma are depicted. Small round-to-oval nuclei with inconspicuous nucleoli are present (hematoxylin-eosin [HE] stain, original magnification x20). B, Necrosis (arrows) is also a prominent feature (HE stain, original magnification x20).