Double interatrial septum with persistent interatrial chamber: A rare but clinically significant anomaly.

Double interatrial septum is an extremely rare congenital anomaly which forms a distinguished midline interatrial chamber between the two atria. The objective of this case report is to highlight this unusual anomaly and to discuss the potential complications of this condition. We report the case of a 6-year-old asymptomatic child who underwent cardiac evaluation for a soft systolic murmur eventually being diagnosed with double interatrial septum.