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. 2020 Aug 6;12:1758835920942367. doi: 10.1177/1758835920942367

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© The Author(s), 2020

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 3. — Gray-scale ultrasonography features of PTC in a 41-year-old man (red arrows): taller than wide; not well-defined; hypoechoic in interior echogenicity. (A) CEUS features of PTC (red arrows): the nodule shows heterogeneous hypo-enhancement at peak time compared with normal thyroid parenchyma. (B) Pathological examination confirmed the diagnosis of PTC with ETE (black arrow), but without CLNM (HE×40) (C). Amplification plot of PTC with BRAF^V600E mutation (D). CEUS, contrast-enhanced ultrasound; CLNM, cervical lymph node metastasis; ETE, extrathyroidal extension; PTC, papillary thyroid carcinoma.