Fused positron-emission tomography (PET) and computed tomography (CT) image. (a) Axial fused PET and CT image shows 2-[18 F] fluoro-2-deoxy-d-glucose (FDG) uptake in the peripheral rim of the mass (arrowheads). The maximum standardized uptake value (SUV) of this lesion was 3.50. (b) Coronal fused PET and CT image. Other signs of abnormal uptake suggesting a malignant lesion were not observed in other intrapericardial mass (arrowheads).