Visualization of the pulmonary arteries in pseudotruncus by pulmonary vein wedge angiography.

Abstract

Pulmonary venous wedge angiography revealed the anatomy of the mediastinal and parenchymal pulmonary arteries in 22 patients with obstruction of the right ventricular outflow tract, proximal pulmonary arteries or branch pulmonary arteries, when conventional angiographic methods had failed. Nine of these patients had pseudotruncus-type anatomy and had no previous surgery. One pulmonary artery was not visualized in 13 of the 22 patients because of postoperative occlusion in 10, congenital "absence" of the left pulmonary artery in two, and suspected sequestration of the left lower lobe in one.