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. 2020 Mar 15;8(1):e000530. doi: 10.1136/jitc-2020-000530

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© Author(s) (or their employer(s)) 2020. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See http://creativecommons.org/licenses/by-nc/4.0/.

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Tumor response assessments and immunohistochemistry of CD8+ lymphocyte infiltration in patient with atypical carcinoid tumor of the lung with a partial response to treatment. (A) Reduction in overall tumor burden (upper) and individual lesions (lower). (B) CT scans of the liver: (i) liver metastasis pretreatment; (ii) pseudo-progression at first restaging; (iii) response at second restaging. (c) High levels of CD8 detected by immunohistochemistry during Cycle 2. PD, progressive disease; PR, partial response; Q2W, every 2 weeks; Q4W, every 4 weeks; SD, stable disease.