[Anomalous origin of the left coronary artery from the pulmonary artery: a case report in an adult].

A 37-year-old female with anomalous origin of the left coronary artery from the pulmonary artery was surgically treated by creation of intrapulmonary aorto-coronary tunnel. Postoperative cardiac catheterization showed a minimal pulmonary stenosis at the baffle. But the remarkable preoperative ST-depression in a treadmill exercise test disappeared completely after operation and the normograde blood flow of the left coronary artery was detected from the ascending aorta.