1. Right aortic arch, right ligamentum, absent left pulmonary artery: a rare vascular ring 
Ali Dodge-Khatami, MD, Carl L Backer, MD, Michael E Dunham, MD, Constantine Mavroudis, MD 
The Annals of Thoracic Surgery 
Volume 67, Issue 5, Pages (May 1999)
DOI: /S (99)

2. Fig 1
Aortogram demonstrates a right aortic arch, mirror image branching of the brachiocephalic vessels, and a ductal “bump” that was consistent with the noted intraoperative right ligamentum arteriosum.
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

3. Fig 2
Contrast bronchogram with simultaneous levophase aortogram demonstrating a normal trachea and left main bronchus, with severe narrowing of the right mainstem bronchus at a site between the right descending aorta and right pulmonary artery.
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

4. Fig 3
Pulmonary angiogram illustrates a large right pulmonary artery, no left pulmonary artery, and no evidence for a pulmonary artery sling.
The Annals of Thoracic Surgery  , DOI: ( /S (99) )