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. 2021 Jul 7;11:14066. doi: 10.1038/s41598-021-93670-2

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© The Author(s) 2021

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Distribution of the analyzed VRTs and survival status at 5 years across tumor types with regard to registration status. *The group “Others” comprised 9 single VRT types. Eight cases were registered: 4 patients (colorectal carcinoma, desmoplastic small round cell tumor, intestinal neuroendocrine carcinoma, follicular dendritic cell sarcoma) did not survive by 5 years, the other 4 (lip carcinoma, melanoma, pancreatic carcinoma, lung carcinoma) remained alive. One unregistered patient (uterine adenosarcoma) was alive at the same time point.