<prompt> Inferior Rib notching is seen in?Coarctation of aortaMarfans syndromeRicketsSLE  <response>: a. Coarctation of aortaRef: Nelsons 20e p 2205Notching of the inferior border of 3rd - 9th ribs from pressure erosion by enlarged collateral vessels, is usually seen beyond the age of 3 years, in a child with coarctation of aorta. 