Radiographically Distinct Variant of Pilocytic Astrocytoma: A Case SeriesMurray, Richard D. MD; Penar, Paul L. MD; Filippi, Christopher G. MD; Tarasiewicz, Izabela MDJournal of Computer Assisted Tomography: July/August 2011 - Volume 35 - Issue 4 - pp 495-497 doi: 10.1097/RCT.0b013e3182237cbf Neuroradiology Abstract Author Information The imaging findings of pilocytic astrocytomas are classically described as a cyst with an enhancing mural nodule. We report 2 unusual cases of multicystic cerebellar midline masses that were proven to be pilocytic astrocytomas. The uniqueness of the imaging features in these cases may represent an important variant of pilocytic astrocytomas. Recognition of this variant may prevent an unnecessary workup to exclude other etiologies such as parasitic infection (ie, cysticercosis) or cystic metastatic disease. From the *Department of Neurosurgery, University of Vermont School of Medicine; and †Department of Radiology, University of Vermont School of Medicine-Fletcher Allen Health Care, Burlington, VT. Received for publication May 1, 2011; accepted May 9, 2011. Reprints: Christopher G. Filippi, MD, Department of Radiology, University of Vermont School of Medicine-Fletcher Allen Health Care, 111 Colchester Ave, Burlington, VT 05401 (e-mail: firstname.lastname@example.org). Copyright © 2011 Wolters Kluwer Health, Inc. All rights reserved.