A review of 1097 consecutive coronary angiograms performed for evaluation of angina pectoris or valvular dysfunctions showed 3 patients with arteriovenous fistulas (0.25%), 6 patients with malpositions (0.55%), 29 patients with aneurysms (2.65%) and 59 patients with myocardial bridging (5.4%). The clinical significance of coronary artery anomalies as variation or malformation was evaluated. A malformation has been found in Bland-White-Garland syndrome, arteriovenous fistulas, congenital coronary stenosis and atresia. In case of clinical symptoms surgical correction should be considered. There is a controversy on the clinical significance of muscular bridging. Further clinical investigations are needed for a better understanding of coronary artery anomalies.