Single atrium associated with persistent left superior vena cava in asymptomatic adult: case report and review of literature.

We report a rare case of an adult patient with single atrium without the characteristics of an endocardial cushion defect, associated with persistent left superior vena cava draining to the left side of the atrium. The patient was reasonably active and asymptomatic till the third decade of his life when the cardiac anomaly was discovered and surgically corrected.