Barium esophagrams were obtained in two patients with respiratory prob
lems whose underlying congenital heart disease was pseudotruncus arter
iosus type I. The esophagrams revealed vascular indentations on the es
ophagus, one posteriorly, and the other anteriorly. Both types of inde
ntations were secondary to aorto-pulmonary communicating arteries from
the descending aorta.