Magnetic resonance imaging for diagnosis of pulmonary vein stenosis after "correction" of total anomalous pulmonary venous connection

Stenosis of individual pulmonary veins is a rare cause of obstructed pulmonary venous blood flow that may be difficult to diagnose.¹ Recent reports^2,3 have shown that pulmonary artery wedge angiography and pulsed Doppler echocardiography are useful in assessing such stenosis. Magnetic resonance imaging (MRI) has the potential advantage of the ability to define anatomic and flow characteristics of cardiovascular lesions. This case report describes the use of MRI in demonstrating the anatomy and flow characteristics of pulmonary venous obstruction in an infant after repair of obstructed total anomalous pulmonary venous connection (TAPVC) to the left vertical vein.