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. 2017 Nov 16;13:340. doi: 10.1186/s12917-017-1258-2

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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. 4 — MRI from a CKCS with phantom scratching. a Midsagittal T2-weighted image of the cervical spinal cord. This study suggested that phantom scratching is associated with a large dorsolateral syrinx within the C3-C6 spinal segment (between the yellow lines). 100% of “scratchers” had a large dorsolateral syrinx within the C4 spinal segment (vertebrae C3; red asterisk). b Transverse T2-weighted image of the spinal cord at C3 illustrating a large dorsolateral syrinx that extends to the SDH