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. 2013 Fall;4(3):e166–e175. doi: 10.2500/ar.2013.4.0064

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Copyright © 2013, OceanSide Publications, Inc., U.S.A.

This publication is provided under the terms of the Creative Commons Public License ("CCPL" or "License"), in attribution 3.0 unported (Attribution Non-Commercial No Derivatives (CC BY-NC-ND)), further described at: http://creativecommons.org/licenses/by-nc-nd/3.0/legalcode. The work is protected by copyright and/or other applicable law. Any use of the work other then as authorized under this license or copyright law is prohibited.

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Figure 2. — Patient 1. Preoperative (A) coronal T1-MRI postcontrast, (B) coronal T2-MRI, and (C) axial T2-MRI show 4.5 × 4.4-cm cystic lesions arising from the frontal sinuses bilaterally with expansion into the anterior cranial fossa and compression of the frontal lobes. Mild peripheral enhancement is present. MRI, magnetic resonance imaging.