In two newborn infants with infradiaphragmatic total anomalous pulmonary venous connection the common pulmonary vein was visualized with 2D echocardiography. The transducer was placed in the subcostal region so as to image the descending aorta and the vertebral column. Apart from the aorta and the inferior vena cava a third vessel was identified, lying anterior to the aorta, the proximal part lying behind the left atrium, the distal part curving anterior in the liver, the distal end being distended. These findings are highly characteristic and diagnostic for total anomalous pulmonary venous connection of the infradiaphragmatic type.