Aortic Stenosis, Subvalvular

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

**Tree numbers:** - C14.280.484.048.750.070 - C14.280.955.249.070

**Synonyms:** - Aortic Subvalvular Stenosis - Subvalvular Aortic Stenosis