| umls-concept:C0003500 | skos:definition | NCI: An aortic stenosis caused by fibromuscular stenosis or hypertrophic cardiomyopathy. It may be associated with congenital heart defects.,MSH: A pathological constriction occurring in the region below the AORTIC VALVE. It is characterized by restricted outflow from the LEFT VENTRICLE into the AORTA. | lld:umls |
