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. 2019 Jan 25;10:1. doi: 10.1186/s13244-019-0688-8

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© The Author(s). 2019

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.

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Fig. 10 — Left adrenal metastasis in a 62-year-old woman with lung cancer. Unenhanced CT (a), portal (b), and late phase (c) images show a left adrenal mass (arrow) with attenuation value of 26 HU on unenhanced CT (a) and “absolute percentage washout” of 15%. Staging ¹⁸F-FDG PET/CT (d) performed 3 months later revealed a left adrenal lesion (arrow) with high metabolic activity (SUV_max 14 g/mL) and increased in size in comparison with CT images. After chemotherapy, restaging ¹⁸F-FDG-PET/CT (e) showed morpho-functional disease progression of the adrenal lesion (arrow) with signs of central necrosis (SUV_max 19 g/mL with central necrotic area of absence of ¹⁸F-FDG uptake). Images of ¹⁸F-FDG-PET/CT provided by database of Nuclear Medicine Service, Fondazione Istituto G. Giglio, Cefalù, Italy