Coronary-Pulmonary Steal Syndrome

The development of an internal thoracic artery-pulmonary artery fistula after operation is a rare entity of no clear etiology. We report a patient who underwent coronary bypass reoperation, presented 3 years later with angina on exertion, and upon investigation was found to have an internal thoracic artery-pulmonary artery fistula. This patient was managed conservatively.