[Lipomatosis of interatrial septum and supraventricular arrhythmias].

Lipomatosis of interatrial septum is a rare benign disorder characterized by fat accumulation into interatrial septum. It may cause atrial arrhythmias and hemodynamic complications. For this reason, it should be considered in differential diagnosis of other cardiac masses. We report the typical case of lipomatosis of interatrial septum and atrial flutter.