A pathological constriction occurring in the region above the AORTIC VALVE. It is characterized by restricted outflow from the LEFT VENTRICLE into the AORTA.

Synonyms: Supravalvular Stenosis, Aortic, Supravalvar Aortic Stenosis, Stenosis, Aortic Supravalvular, Supravalvular Stenoses, Aortic, Aortic Supravalvular Stenoses, Aortic Stenosis, Supravalvular, Stenoses, Aortic Supravalvular, Aortic Supravalvular Stenosis, Supravalvular Aortic Stenosis, Stenosis, Supravalvular Aortic