Pediatric Right Atrial Mass With Pulmonary Embolization

Pediatric cardiac masses involving the right atrium (RA) are extremely rare but have the potential for severe complications. The differential for a right atrial mass is broad, including benign tumors, metastatic disease, and thrombi, and they share similarities on imaging, making the diagnosis challenging.1,2 The range of complications depends on the type, shape, size, and location of the mass. In cases of cardiac myxomas and thrombi, pulmonary embolization may occur.3,4 The management of a right atrial mass needs to be individualized based on the pathology and clinical presentation; however, anticoagulation and surgical resection are important options.