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. 2014 Mar 4;12:9. doi: 10.1186/1546-0096-12-9

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Copyright © 2014 Hospach 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 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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9-year-old girl with JIA at first diagnosis of cervical arthritis (3 mm coronal T1 spinecho sequence with fat saturation). Malalignment of occiput, atlas and axis. Contrast enhancement of atlanto-occipital joints with a small erosion of the right and a large erosion of the left lateral mass of the atlas (long arrows). Contrast enhancement of the bone marrow in the atlas (short arrow). Contrast enhancement of the widened left atlanto-axial joint (two short arrows).