ABSTRACT

Double atrial septum is a rare anomaly in which there is a double-walled atrial septum with a persistent midline space between the two atria. Left-sided obstructive anomalies and embolic events were associated with double atrial septum. Incomplete fusion of septum secundum and septum primum results in a pouch and slow flow pattern that can be a potential source of emboli. We presented a 22-year-old male patient with transient ischemic attack and septal interatrial pouch, which was a distinct space between two atriums, as a potential source of emboli.