| rib notching | 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. (05 Mar 2000) |
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| unilateral rib notching | <radiology> Aortic coarctation, proximal to left subclavian artery most likely to be right, anomalous right subclavian artery most likely to be left, subclavian artery stenosis / atresia, most likely to be IPSIlateral, Blalock-Taussig shunt, anastamosis of subclavian artery to pulmonary artery, for Tetralogy of Fallot, most likely to be IPSIlateral (12 Dec 1998) |