title: Enlarged racing heart in a nine-year-old girl.
mesh_terms: D002311:Cardiomyopathy, Dilated / Q000175:diagnosis* / Q000473:pathology; D002648:Child; D004452:Echocardiography; D004562:Electrocardiography; D005260:Female; D006801:Humans; D014927:Wolff-Parkinson-White Syndrome / Q000175:diagnosis* / Q000473:pathology