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Swiss Cheese‐Like Atrial Septal Defect Detected by Three‐Dimensional Echocardiography

Atrial septal defect (ASD) is a common adult congenital heart malformation with left-to-right shunt, dilated right heart chambers, pulmonary hypertension, and hemodynamic symptoms. Transcatheter closure is the most recommended therapeutic option for ASD. Furthermore, the detailed delineation of interatrial septum (IAS) anatomy provided by echocardiography has contributed to successful transcatheter closure of the defect. Two-dimensional transesophageal echocardiography (2DTEE) is generally used for the suitability of the defect for device implantation. However, this imaging method is inadequate to show the real anatomy of the IAS. Three-dimensional transesophageal echocardiography (3DTEE) gives further information about the IAS and makes the physician to decide the optimal therapeutic option. We present a case of an adult patient with Swiss cheese-like ASD detected by real time 3DTEE.