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Right atrial fibroma requiring emergent intervention in an 8-week-old infant.

Cardiac fibromas are extremely rare in children and typically do not involve the right atrium. We report the case of an 8-week-old infant with a right atrial fibroma who presented acutely in profound shock. Echocardiography revealed a large mass occupying the right atrium and obstructing flow through the tricuspid valve, prompting emergent surgical resection. To our knowledge, ours is the youngest patient to survive complete resection of a right atrial fibroma.