Double superior vena cava presenting with anomalous jugular and azygous venous systems.

Objective: To report on the double superior vena cava occurring with anomalous azygous vein and abnormal termination of the cardiac veins, which has not been reported before in one individual.

Results: Examination of the heart revealed the presence of both the right and left superior vena cava. The right superior vena cava terminated into the right atrium and received the right root of the azygous vein, and the left superior vena cava received the left root of the azygous vein before entering the dilated coronary sinus.