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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 indicates aorta.
