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. 2018 Jan 22;16:13. doi: 10.1186/s12957-017-1305-2

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© The Author(s). 2018

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 — Comparison of CTC counts in colorectal polyps and colorectal carcinoma at different anatomical locations. CTC counts were higher in colorectal carcinoma than in colorectal polyps, significant differences observed in the sigmoid colon (*P < 0.001) and the descending colon (#P < 0.05)