Rib notching | definition of rib notching by Medical dictionary
a smooth defect in the lower border of one or more upper ribs caused by enlarged intercostal collateral vessels, most often a sign of coarctation of the aorta.
An abnormal indentation in the inferior margin of the ribs, seen radiographically. It is characteristically identified in people with coarcation of the aorta.
References in periodicals archive
In coarctation of the aorta, characteristic rib notching
is often present on chest X-ray or CT scan and is indicative of extensive arterial collateral formation bypassing the area of coarctation; a characteristic '3' sign is often also seen on chest X-ray.