Selected cine image from a left atrial (LA) cine-angiogram in a left axial oblique (30° LAO and 30° cranial) view illustrating atretic mitral valve (AMV). Opacification of the coronary sinus (CS) is seen via a connecting (C) vein. Such communications, including levoatriocardinal veins [16] have been documented in the literature. Reproduced from [4].