title: Single coronary artery with the right coronary artery arising from the first septal perforator.
abstract: A 50-year-old woman with chest pain and an exercise thallium-201 scintigram positive for focal ischemia was found on coronary arteriography to have a heretofore unreported variant of single left coronary artery with the right coronary artery originating as a branch from the first septal perforator. Proximally, the aberrant vessel coursed through the ventricular septum at the level of the right ventricular outflow tract. A conus artery was absent and this is a possible basis for the focal basal ventricular ischemia and the patient's symptoms.
mesh_terms: D003330:Coronary Vessel Anomalies / Q000000981:diagnostic imaging*; D005260:Female; D006343:Heart Septal Defects / Q000000981:diagnostic imaging*; D006346:Heart Septum / Q000000981:diagnostic imaging; D006801:Humans; D008875:Middle Aged; D011859:Radiography; D011868:Radioisotopes; D013793:Thallium
chemical_list: D011868:Radioisotopes; D013793:Thallium