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. 2024 Feb 2;13(2):1196–1207. doi: 10.21037/tcr-23-2043

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2024 Translational Cancer Research. All rights reserved.

Open Access Statement: This is an Open Access article distributed in accordance with the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0), which permits the non-commercial replication and distribution of the article with the strict proviso that no changes or edits are made and the original work is properly cited (including links to both the formal publication through the relevant DOI and the license). See: https://creativecommons.org/licenses/by-nc-nd/4.0.

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Pathological features of lung adenocarcinoma. (A) Irregular lumen and various glandular structures were found in fibrous stroma (hematoxylin and eosin, ×100); (B) heterotypic tumor cells were arranged into an irregular gland cavity or cord structure, and cell heterotopicity was obvious (hematoxylin and eosin, ×400); (C) the tumor cytoplasm was diffusely positive for Napsin-A (immunochemistry, ×200); (D) the tumor nucleus was diffusely positive for transcription termination factor 1 (immunohistochemistry, ×200).