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. 2013 Dec 21;13:600. doi: 10.1186/1471-2334-13-600

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Copyright © 2013 Baldini 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 cited. 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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Histological findings in blood-borne brain lesion. A. The multiple hemorrhagic nodules showed whorls of spindle-shaped cells and neovascularization with small-vessel proliferation characteristic of Kaposi’s sarcoma (hematoxylin-eosin stain; original magnification, ×400). B. Tumour cells invaded brain parenchyma through perivascular space (hematoxylin-eosin stain; original magnification, ×200). C. Neoplastic nodules showed hemorrhagic necrosis with pigmented macrophages (hematoxylin-eosin stain; original magnification, ×200). D. The neoplastic cells show strong cytoplasmic staining for CD34 (immunoperoxidase on a paraffin embedded section, original magnification, ×400).