“…Cardiac cysts are a rare occurrence in adults, with most cysts being congenital, simple in morphology, and benign. 1 Although complex, septate cysts may indicate echinococcal infections, 2 simple cardiac cysts are typically pericardial or bronchogenic in origin. 3 These cysts arise during embryologic development of the pericardial cavity, leading to a preference for the cardiophrenic angles and, less frequently, the cardiac chambers.…”