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Persistent left superior vena cava demonstrated with M mode echocardiography and multislice spiral computed tomography
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A 28 year old woman was referred for evaluation of palpitations. A transthoracic echocardiogram in the parasternal long axis view demonstrated an echolucent structure located in the atrioventricular groove (panel A), indicative of a notably dilated coronary sinus. After injection of intravenous …