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. 2013 Dec 10;8:31–33. doi: 10.2147/OPTH.S47901

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© 2014 Pacheco et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

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Histopathological analysis of an orbital hemangiopericytoma.

Notes: (A) Low-power view showing the lobular pattern of highly cellular areas separated by fibrous tissue (hematoxylin and eosin [H&E], 40×). (B) Large, dilated vascular channels within the neoplastic cells (H&E, 100×). (C) A high-power view of the cellular areas (H&E, 400×). (D) The fibrotic areas separating the lobules were mostly acellular (H&E, 400×). (E) Factor VIII-positive immunostaining (100×). (F) Ki-67 immunostaining (200×).