Fig. 9
From: The imaging appearances of various pericardial disorders
A 61-year-old man with Erdheim-Chester disease. Axial reformatted contrast-enhanced CT image demonstrates lobulated soft tissue densities with pseudo-tumor appearance involving the right atrium (short arrows), right atrioventricular groove (long arrow), and the aortic wall (curved arrow). Pericardial (asterisk) effusion and thickening (arrowheads) are also seen