| Supravalvular aortic stenosis | |
|---|---|
| Specialty | Medical genetics  |
| Causes | Williams syndrome |
| Diagnostic method | echocardiography or MRI |
Supravalvular aortic stenosis is a congenital obstructive narrowing of the aorta just above the aortic valve and is the least common type of aortic stenosis. It is often associated with other cardiovascular anomalies and is one of the characteristic findings of Williams syndrome. The diagnosis can be made by echocardiography or MRI.