Fig. 3

Both the axial and coronal CT images demonstrated anomalous soft tissue masses (pentagon) present in the right atrium, diffusely infiltrating and penetrating the atrial wall, resulting in the disappearance of the normal structure of the right atrium. Visible pericardial effusion (white arrow) was observed surrounding the heart. Abnormal nodules (pentagon) were observed around the left anterior descending coronary artery on the coronal image. LA Left atrium, RA Right atrium, LV Left ventricle