[2 cases of discrete subaortic stenosis].
D001020:Aortic Stenosis, Subvalvular / Q000175:diagnosis*; D002312:Cardiomyopathy, Hypertrophic / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D004452:Echocardiography; D004562:Electrocardiography; D006801:Humans; D008297:Male