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. 2017 Jan 5;17:17. doi: 10.1186/s12885-016-3000-z

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© The Author(s). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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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Fig. 2 — Images of the tumor from the lung. a-d Hematoxyalin and eosin-stained tumor sections from lung nodules. a Low power magnification (40X) of tumor demonstrated nodules of tumor cells can be seen in a background of abundant, fresh blood cells. b Medium power magnification (100X) showed the tumor cells are both epitheliod and spindle-shaped in appearance. The epitheliod morphology predominates in this area of the tumor. c High power magnification (400X) illustrated the tumor cells have prominent nucleoli. A mitotic figure can be seen in the center of the image confirming the tumor is mitotically active. d Another view of the tumor showing both epitheliod and spindle-shaped tumor cells, but in this section the spindle-shaped cells predominant (40X). e Tumor cells stained positive for CD34, a vascular marker (40X). f Tumor cells showed intense signal for CD31, another vascular marker (40X). g Factor VIII-related antigen, another endothelial marker commonly used to identify vascular tumors, demonstrated positivity in the tumor cells (40X)