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. 2020 Jan 6;20:21. doi: 10.1186/s12885-019-6505-4

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© The Author(s). 2020

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 — a Esophagogastroduodenoscopy revealed that the esophageal lumen was filled with necrotic components from the primary esophageal cancer; b computed tomography (CT) revealed that the left bronchus was compressed by the primary esophageal tumor components; c bronchoscopy revealed that the tracheal lumen at the carina level was deformed by the primary esophageal tumor components; d bronchoscopy revealed that the left bronchus presented with an almost complete obstruction due to compression by the primary esophageal tumor components