Anomalous origin of the right coronary artery from the main pulmonary artery. A case report.

A fifty-nine-year-old, asymptomatic woman with anomalous origin of the right coronary artery from the main pulmonary artery is presented. The diagnosis was established by catheterization and angiocardiography. The indications for surgery in this condition are discussed, with special reference to asymptomatic patients. In this patient, surgery was not undertaken, because of the absence of signs of impairment of left ventricular perfusion and function. The patient remains asymptomatic after eight years of observation.