TY - JOUR T1 - Persistent left superior vena cava demonstrated with M mode echocardiography and multislice spiral computed tomography JF - Heart JO - Heart SP - 473 LP - 473 DO - 10.1136/hrt.2005.069302 VL - 92 IS - 4 AU - N V B Mai AU - G T Lau AU - S S Maze Y1 - 2006/04/01 UR - http://heart.bmj.com/content/92/4/473.abstract N2 - 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 … ER -