Congenital aneurysm of the right atrial appendage.

Congenital aneurysm of the right atrial appendage is a rare cardiac anomaly with only a few reported cases in the literature. Most of the cases involved adults in their third decade of life. We report a case of congenital aneurysm of the right atrial appendage in a newborn, who initially presented with jaundice and incidentally discovered systolic murmur. The diagnosis was established by enhanced CT scan of the chest and echocardiography that also showed atrial septal defect (ASD) and multiple ventricular septal defects (VSDs). Because of its rare occurrence, diagnosis is difficult and the symptoms may be confused with other causes of right atrial dilation such as Ebstein's anomaly.