[Enlarged coronary sinus. Mono and bidimensional echocardiographic aspects (author's transl)].

: One case of enlarged coronary sinus with a total anomalous pulmonary venous connection (TAPVC) is described. The echocardiographic findings are compared to those seen in cases with persistence of the left superior vena cava (PLSVC). The diagnosis has been established by single crystal and two-dimensional echocardiography, by cardiac catheterization and angiography and was confirmed at surgery; post-operative echocardiographic control was performed. The differential diagnosis between TAPVC or PLSVC and other anomalies which may simulate a dilated coronary sinus is discussed. The differences between TAPVC and PLSVC by contrast echocardiography are reported.