Membranous subvalvular aortic stenosis

What it means

Subvalvular stenosis is caused by a diaphragm-like membrane. The stenosis is clinically manifested like any other form of aortic stenosis but is often associated with some aortic insufficiency.

An important feature in the differential diagnosis between valvular and subvalvular aortic stenosis is the fact that no ejection sound is present in the latter.

Rare diseases that can present with this1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category