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. 2017 May 8;4(1):e000174. doi: 10.1136/bmjresp-2016-000174

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CT (left of images) showing calcified areas and PET (right of images) scans showing increased FDG-PET metabolic activity in the mediastinal mass (A) and perihilar lymph nodes (B). FDG-PET, fluorodeoxyglucose-positron emission tomography.