Real time three-dimensional transesophageal echocardiographic evaluation of a sinus venosus atrial septal defect.

We present a case of a 65-year-old man who presented with atrial flutter and dilation of right heart was noted on transthoracic echocardiography. Transesophageal echocardiography revealed a large sinus venosus atrial septal defect close to superior vena cava and anomalous connection of right superior pulmonary vein. Additionally, real time three-dimensional transesophageal echocardiography provided superior spatial details and demonstrated the size, location of the defect and its spatial relationship to the surrounding structures. Patient underwent successful surgical repair.