Hypertrophy and obstruction of outflow tract of left ventricle.
D001024:Aortic Valve Stenosis / Q000473:pathology; D002312:Cardiomyopathy, Hypertrophic / Q000473:pathology*; D006651:Histocytochemistry; D006801:Humans; D008854:Microscopy, Electron; D009206:Myocardium / Q000473:pathology