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. Author manuscript; available in PMC: 2021 May 28.
Published in final edited form as: J Thorac Oncol. 2019 May 20;14(9):1583–1593. doi: 10.1016/j.jtho.2019.05.009

Figure 2.

Figure 2.

Representative images of spread through air spaces (STAS) (red circles) in atypical carcinoid (A), large cell neuroendocrine carcinoma (B), and small cell lung carcinoma (C). STAS is identified as solid nests in the air spaces in the lung parenchyma beyond the edge of the main tumor (black line) (original magnification, x100)