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. 2021 Dec 23;11:794399. doi: 10.3389/fonc.2021.794399

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Copyright © 2021 Xue, Liu, Liu, Hao, Shi, Zhang, Zhang, Zhao and Liu

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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A 42-year-old woman with PTC. (A) Preoperative ultrasound images showing that the size of the tumor was approximately 1.00*0.77*1.03 cm in the right lobe with hypoechogenicity, an irregular margin, a poorly defined boundary and a taller-than-wide shape. (B) Transverse sonogram showing that the contact range with the capsule was approximately 25%-50%. (C) CEUS showing heterogeneous hypoenhancement in the nodule. (D) Metastatic lymph node showing that the normal structure disappeared, and microcalcification was detected inside. (E) Surgical specimen confirming PTC (HE, original magnification, ×100). (F) Surgical specimen confirming cervical lymph node metastasis from PTC (HE, original magnification, ×100).