title: Cor triatriatum: angiographic diagnosis by retrograde catheterization of the dorsal accessory chamber.
mesh_terms: D000790:Angiocardiography; D006328:Cardiac Catheterization; D002648:Child; D004562:Electrocardiography; D005260:Female; D006325:Heart Atria; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging*; D006352:Heart Ventricles; D006801:Humans; D006973:Hypertension / Q000000981:diagnostic imaging; D008722:Methods; D008943:Mitral Valve; D011667:Pulmonary Veins / Q000002:abnormalities*; D013902:Radiography, Thoracic