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. 2015 Feb 28;13:7. doi: 10.1186/s12969-015-0003-2

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© Tuttle et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), 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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Morphologic evaluation of dactylitis. Both the affected finger and toe showed tenosynovial tissue with prominent vascularity and excess myxoid extracellular matrix (A, finger, original magnification, 100×); additionally, fibrocartilage showed a prominent myxoid component (B, toe, original magnification, 200×; C, toe, original magnification, 400×), areas of binucleation (D, toe, original magnification, 400×), and focal hypocellularity and coagulative necrosis (E, finger, original magnification, 400×). Fibrinous synovitis was also seen (F, finger, original magnification, 400×).