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Figure 3a. Heterogeneous physiologic bowel uptake in a 43-year-old woman with nasopharyngeal lymphoma. Coronal fused PET-CT image (a) and unfused PET scan (b) show mild FDG uptake at the fundus of the stomach and heterogeneous FDG uptake throughout the small and large bowel, without prominent focal-segmental uptake. The patient had no small or large bowel disease; thus, these findings again represent a normal variant of physiologic bowel uptake (cf Fig 2).