Coexistent asymptomatic persistent left superior vena cava, partial anomalous-venous connection and atrial septal defect: a case report.

Congenital structural abnormalities not associated with cyanosis may go undetected until late adulthood if clinical symptoms are not evident. We report the case of 17 year-old male, referred to cardiology clinics for evaluation of a murmur, which was found to have asymptomatic severe right heart chambers dilatation. Right heart catheterization and angiography revealed the diagnoses of partial anomalous pulmonary venous connection, an atrial septal defect and persistent left superior vena cava.