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. 2016 Oct 6;16:125. doi: 10.1186/s12876-016-0545-x

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© The Author(s). 2016

Open AccessThis 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. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Focal [18 F]FDG uptake in a 79 year old male who was evaluated for an isolated right upper lobe pulmonary nodule. (a) coronal and (b) sagittal PET slices show indeterminate FDG avid foci (arrows) within the rectum. Area of increased uptake (arrow) was localized by PET/CT (c). Tissue biopsy revealed invasive moderately differentiated (grade 3 of 4) adenocarcinoma