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. 2019 Jan 8;17:12. doi: 10.1186/s12957-019-1558-z

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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. 5 — A 54-year-old woman with left thyroid nodule. a US images show a 0.3 cm × 0.2 cm solid hypoechoic nodule with macrocalcification in left thyroid gland. Radiologist diagnosed it as a benign nodule. b AI system diagnosed it as a malignant nodule. Histology confirmed diagnosis of papillary thyroid carcinoma