Left to right shunt through a left atrial left superior vena cava.
D000293:Adolescent; D006328:Cardiac Catheterization; D002932:Cineangiography; D004562:Electrocardiography; D006326:Heart Auscultation; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D008297:Male; D014683:Vena Cava, Superior / Q000002:abnormalities*