title: Familial membranous subaortic stenosis.
abstract: Familial occurrence of membranous subaortic stenosis (MSS) is described in three families. The defect was found in 2 siblings in two of these families, and in 3 siblings of the third family. The importance of early diagnosis and treatment of MSS is emphasized. We suggest early evaluation of first-degree relatives of patients with MSS for the possibility of this defect.
mesh_terms: D000293:Adolescent; D001020:Aortic Stenosis, Subvalvular / Q000151:congenital / Q000175:diagnosis / Q000235:genetics*; D002312:Cardiomyopathy, Hypertrophic / Q000235:genetics*; D002648:Child; D002675:Child, Preschool; D004452:Echocardiography; D005260:Female; D006801:Humans; D008297:Male