Aortic vasa vasorum in cyanotic congenital heart disease.

Three cases for longstanding untreated cyanotic congenital heart disease are presented. In addition to collateral circulation from bronchial, intercostal, and inferior phrenic arteries, thoracic aortic vasa vasorum were visualized. We believe this may represent an additional collateral pathway to the lungs. The angiography of these cases is presented.