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PET/CT images at various stages during the presentation. In A and B, PET/CT demonstrates a FDG avid mediastinal mass; C and D show an MIP image on PET/CT demonstrating an increase in the size of the mediastinal mass; E and F showing a decreased FDG uptake in the mediastinum and appearance of new FDG avid metastasis in the liver on PET/CT. FDG, 18-fluorodeoxyglucose; MIP, maximal intensity projection; PET, positron emission tomography.
