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. 2019 Sep 18;19:927. doi: 10.1186/s12885-019-6065-7

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© The Author(s). 2019

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. 2 — LNM map for TESCC. a. Upper paratracheal node area; b. Lower paratracheal node area; c. LNM map of the upper thoracic segment; d. LNM map of the middle thoracic segment; E. LNM map of the lower thoracic segment; f. LNM map of all the thoracic segments. LNM, metastatic lymph node; TESCC, thoracic esophageal squamous cell carcinoma; Red plot, metastatic lymph nodes of upper thoracic esophageal squamous cell carcinoma; Purple plot, metastatic lymph nodes of middle thoracic esophageal squamous cell carcinoma; Green plot, metastatic lymph nodes of lower thoracic esophageal squamous cell carcinoma