Tetralogy of Fallot with severe pulmonary valvar stenosis and pulmonary vascular sling (anomalous origin of the left pulmonary artery from the right pulmonary artery).

A patient with the rare combination of tetralogy of Fallot with severe pulmonary valvar stenosis and pulmonary vascular sling is presented. The limitations imposed by pulmonary artery hypoplasia on the display of pulmonary vascular sling by conventional imaging techniques are discussed.