Sinus Venosus Atrial Septal Defect

A Sinus venosus atrial septal defect is a type of atrial septal defect primarily associated with the sinus venosus.

They represent 10% of atrial septal defects.

They can occur near the superior vena cava or inferior vena cava, but the former are more common.

They can be associated with anomalous pulmonary venous connection.

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