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. 2019 Oct 23;9:15198. doi: 10.1038/s41598-019-51599-7

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Scheme of the analysis. Radiomic features were extracted from primary tumor (PT) and lymph nodes metastases (LN) as well as from the distribution of LN around PT (LNPT). These data were used to predict loco-regional control. Performance of the models based on PT only and combination of PT and LN was compared in a separate validation cohort.