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. 2020 Oct 2;10:559057. doi: 10.3389/fonc.2020.559057

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Copyright © 2020 Yang, Huang, Chen, Xu, Lei, Wang and Fang.

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) Cytological features of fine-needle aspiration biopsy of the right parotid mass: few poorly differentiated carcinomas with necrosis (×20 hematoxylin/eosin). (B) Histopathological features of CT-guided lung mass biopsy: cancer cells in the lung tissue grow invasively, with local necrosis (×20 hematoxylin/eosin) (C) Androgen receptor (AR) (+,40%) (×20 hematoxylin/eosin) (D) The human epidermal growth factor receptor-2(HER2) demonstrated 3+ reactivity to show positive (×20 hematoxylin/eosin) (E) NapsinA: cancer cells were negative, while remaining alveolar epithelial cells were positive (×20 hematoxylin/eosin) (F) TTF1: cancer cells were negative, while remaining alveolar epithelial cells were positive (×20 hematoxylin/eosin).