Anomalous Right Internal Thoracic Artery Terminating in the Right Superior Pulmonary Vein.

Variation in the origin of the internal thoracic arteries has been previously described and reported in the literature; however, there has been no report of an anomalous termination of the right internal thoracic artery (RITA) in the pulmonary vein persisting and presenting in adult life. We report the case of a right internal thoracic artery originating from the first part of the subclavian artery but terminating in the right superior pulmonary vein that presented during the third decade of life.