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. 2018 Mar 21;11(2):138–143. doi: 10.1007/s12254-018-0389-x

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© The Author(s) 2018

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 1 — Pseudoprogression in 54-year-old man with non-small cell lung cancer receiving immune checkpoint inhibitor therapy. a Coronary fluorodeoxyglucose positron emission tomopraphy/computed tomography (¹⁸F-FDG-PET/CT) imaging obtained before therapy demonstrate ¹⁸F-FDG avid malignant tumor in the right lung. b 5 weeks after treatment initiation tumor size and FDG uptake increased. Therapy was continued and 6 weeks thereafter tumor size shrinkage and a reduced ¹⁸F-FDG uptake were observed (c)