title: Dual left coronary systems.
abstract: Dual left coronary systems, one originating normally and the other anomalously from the right sinus of Valsalva, is described in a 53-year-old patient with atypical chest pain with exercise-induced ST-depression in the anteroseptal area (V2-4). Clinical consequences of this hitherto undescribed anomaly are discussed.
mesh_terms: D000792:Angiography; D003330:Coronary Vessel Anomalies / Q000000981:diagnostic imaging*; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D012850:Sinus of Valsalva / Q000002:abnormalities* / Q000000981:diagnostic imaging