Figure 1. 55-year-old man with recurrent mantle cell lymphoma. CT shows symmetric circumferential thickening of the distal trachea (arrows).

Figure 2. 55-year-old man with recurrent mantle cell lymphoma. Axial PET/CT shows intense activity in the suspected area around the distal trachea.

Figure 3. 55-year-old man with recurrent mantle cell lymphoma. Full body coronal reformatted PET scan shows abnormal intense tracheal uptake and other areas of expected uptake.

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