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Case Reports in Radiology
Volume 2014, Article ID 524574, 3 pages
Case Report

A Pilocytic Astrocytoma Mimicking a Clinoidal Meningioma

1Department of Neurological Surgery, The Ohio State University Wexner Medical Center, 410 W. 10th Avenue, N1022 Doan Hall, Columbus, OH 43210, USA
2Department of Pathology, The Ohio State University Wexner Medical Center, 333 W. 10th Avenue, 4169 Graves Hall, Columbus, OH 43210, USA

Received 25 December 2013; Accepted 25 February 2014; Published 13 March 2014

Academic Editors: C. Chaskis, T. Krings, M. Leonardi, and A. Spalice

Copyright © 2014 Christopher S. Hong et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Pilocytic astrocytomas and meningiomas are benign, primary brain tumors that may involve the optic tract. Classically, the presence of a dural “tail” sign may differentiate a meningioma from other intracranial lesions. In this report, we describe a mass with the typical appearance of a clinoidal meningioma on magnetic resonance imaging (MRI) but postoperatively diagnosed as a pilocytic astrocytoma. This case illustrates the rare occurrence of a pilocytic astrocytoma mimicking a meningioma on MRI.