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FIGURE 6. (A) Cardiac uptake: Normal physiologic intense 18F-FDG uptake throughout myocardium. (B) Atrial uptake: Note inhomogeneous mild 18F-FDG uptake in enlarged right atrium resembling abnormal mediastinal nodal tissue uptake. Thick arrow points out normal stomach uptake. (C) Cardiac uptake: Apical scar with aneurismal formation.