TY - JOUR T1 - Two cases of left superior vena cava draining directly to a left atrium with a normal coronary sinus. JF - British Heart Journal JO - Heart SP - 158 LP - 160 DO - 10.1136/hrt.65.3.158 VL - 65 IS - 3 AU - H B Wiles Y1 - 1991/03/01 UR - http://heart.bmj.com/content/65/3/158.abstract N2 - The most common variation in the thoracic systemic venous system is a persistent left superior vena cava draining to a coronary sinus. A rare anomaly is a persistent left superior vena cava connecting directly to the left atrium. In this situation it is believed that the coronary sinus must be absent. This report describes two cases of a persistent left superior vena cava draining to a left atrium with a normal coronary sinus. ER -