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. 2017 Dec 8;19:272. doi: 10.1186/s13075-017-1481-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. 1 — The histological images of fasciitis, CD31-expressing blood vessels and vascular endothelial growth factor (VEGF)-expressing cells in the fascia of patients with dermatomyositis (DM) or polymyositis (PM). a Fasciitis in a patient with DM. H&E staining shows massive inflammatory cell infiltration around the small blood vessels and hyperplasia of the fascia (original magnification × 50). b Immunohistochemical staining shows the proliferation of CD31-expressing capillaries and venules (brown) in the fascia of a patient with DM (original magnification × 200). c Immunohistochemical staining shows the accumulation of VEGF-expressing cells (brown) around the blood vessels in the fascia of a patient with DM (original magnification × 400). d No fasciitis is observed in a patient with PM (original magnification × 50). e Immunohistochemical staining for CD31 (brown) shows no angiogenesis in the fascia of a patient with PM (original magnification × 200). f Immunohistochemical staining shows a small number of VEGF-expressing cells (brown) in the fascia of a patient with PM (original magnification × 400)