Unroofed coronary sinus, left-sided superior vena cava and mitral insufficiency: A case report and review of the literature

Figure 3 Agitated saline contrast injection in the left antecubital vein. A: Views taken from the 4-chamber window. Note the contrast filling the left atrium and the left ventricle before crossing the dilated ostium of the unroofed coronary sinus (triangle); B: Arrows pointing to the edges of the coronary sinus ostium. RA: Right atrium; LA: Left atrium; RV: Right ventricle; LV: Left ventricle.