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. 2020 Feb 27;10:112. doi: 10.3389/fonc.2020.00112

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Copyright © 2020 Xi, Gao, Wu, Fang, Xu, Liu, Yang, Zhu, Zhao, Lai, Zhang, Zhang and Jiang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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This case is a 27-year-old man with an follicular carcinoma (FC) nodule. (A) Conventional ultrasonography (CUS) showed a solid hyperechoic nodule in the left lobe that was associated with a regular thin halo and an inside area that was hypoechoic, which is indicative of low suspicion. (B) Abundant intranodular and peripheral vascularity was detected. (C) The elastography score was 2, indicating a soft stiffness. (D) Contrast-enhanced ultrasonography (CEUS) revealed heterogenous enhancement.