title: Right coronary artery arising from the left main stem with dynamic compression by great vessels.
abstract: Anomalous origin of the right coronary artery from the left main stem is a very rare congenital anomaly. The entrapment of its course between the aorta and pulmonary artery can cause dynamic blood flow limitation. We report a 68-year-old female presenting with recurrent chest pain and a positive treadmill exercise test. The coronary angiography disclosed anomalous origin of the right coronary artery from the left main stem with dynamic compression between aortic root and pulmonary trunk during the systolic phase. With hesitation about surgical revascularization, the patient was maintained on oral medication uneventfully.
authors.affiliation: Division of Cardiology, Department of Medicine, Taichung Veterans General Hospital, Taichung, Taiwan, ROC.
authors.forename: Yu-Cheng
authors.initials: YC
authors.lastname: Hsieh
authors.forename: Kuo-Yang
authors.initials: KY
authors.lastname: Wang
authors.forename: Kae-Woei
authors.initials: KW
authors.lastname: Liang
authors.forename: Ying-Tsung
authors.initials: YT
authors.lastname: Chen
authors.forename: Chih-Tai
authors.initials: CT
authors.lastname: Ting
mesh_terms: D000368:Aged; D017023:Coronary Angiography; D003330:Coronary Vessel Anomalies / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans