Cor triatriatum: echocardiographic error in diagnosis. (A case report).
D000293:Adolescent; D003951:Diagnostic Errors; D004452:Echocardiography; D005260:Female; D006325:Heart Atria / Q000002:abnormalities*; D006801:Humans; D011667:Pulmonary Veins / Q000002:abnormalities