Fig. 17

Total anomalous pulmonary venous connection of supracardiac type. A All 4 pulmonary veins are connected to a collector (c), which is draining to a vertical vein (vv). B Along its course to the innominate vein, the vertical vein (vv) passes between the left main bronchus (B) and the left pulmonary artery (LPA). This represents an anatomic vice (*) which may cause obstruction of flow. Ao = aorta