Echocardiographic manifestations of persistence of the right sinus venosus valve.

The echocardiographic features of a neonate born with a persistent right sinus venosus valve are presented. Because surgical correction of this serious anomaly may be possible, the diagnosis should be made soon after birth. An echocardiogram suggesting a right atrial myxoma, an unlikely finding in a neonate, should be an important clue to the diagnosis of this anomaly.