An Unusual Left Atrial Mass in a 72-Year-Old Patient With Cardiac Tamponade

Apical 4-chamber view showing massive pericardial effusion with cardiac tamponade. Note the typical “swinging heart” appearance. Zoomed apical 4-chamber view showing a pedunculated oval mass with smooth edges and a relatively homogeneous texture projecting over the left atrial cavity. Note that maximal protrusion toward the mitral orifice occurred at end diastole, just before mitral valve closure. Apical 3-chamber view showing diastolic collapse of the posterior left atrial (LA) wall. Note that the collapsing movement and the amount of fibrin adhering to the epicardial surface were more pronounced in the caudal portion, rather than cranial, of the LA posterior wall. These factors contributed to create a pedunculated appearance. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.