Abstract
BACKGROUND: Primary cardiac tumors are uncommon in pediatric patients, particularly myxomas. Right ventricle (RV) myxomas can lead to life-threatening sequelae such as pulmonary embolism. CASE SUMMARY: A teenage patient presented with chest pain, was initially diagnosed with pulmonary emboli, and ultimately diagnosed with RV myxoma after transcatheter echocardiographic-guided biopsy of the intracardiac mass. The myxoma was surgically resected, and the patient fully recovered. DISCUSSION: Intracardiac myxomas are unusual in pediatric patients, particularly myxomas arising from the RV. Prior reports of RV myxoma associated with distal pulmonary emboli in children have been fatal or associated with Carney complex. In unusual cases, transcatheter biopsy can confirm the diagnosis. TAKE-HOME MESSAGES: A high degree of suspicion is required to diagnose pediatric myxoma, particularly when it resembles other intracardiac masses, such as thrombus. Additionally, multimodality imaging and biopsy may help to establish a definitive diagnosis before surgical resection.