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. 2016 Oct 4;18:222. doi: 10.1186/s13075-016-1125-8

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© The Author(s). 2016

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 — Bone erosions in a patient with rhupus syndrome. Longitudinal ultrasound image of the second metacarpophalangeal joint lateral area showing a grade-2 scoring ultrasound structural erosion (arrow) with sharp margins (a) corresponding to a grade-2 rheumatoid arthritis magnetic resonance imaging score erosion (arrow) visible in the computed tomography coronal scan of the hand (b). MH second metacarpal head, PP second proximal phalanx