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. 2014 Mar 20;14:213. doi: 10.1186/1471-2407-14-213

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Copyright © 2014 Martínez et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Immunohistochemical characterization of grade II PXA and associated anaplastic PXA. Upper row: T1-weighted, gadolinium-enhanced axial MRI showing the right parietal PXA at presentation (A), after surgical resection (B) and at the time of local relapse (C). Lower row: Photomicrographs showing histological and immunohistochemical features of the grade II PXA and grade III PXA with anaplastic features (HE, GFAP and MIB-1. The last one showed a higher positivity of 20% in the anaplastic PXA, whereas it was 10% in the grade II PXA).