Inferior rib notching is seen in: (A) Coarctation of aoa, (B) Rickets, (C) ASD, (D) Multiple myeloma
Answer is A. A i.e. Coarctation of aoa Inferior rib notching in coarctation of aoa is d/t pressure erosion of intercostal aeriesQ It usually takes several years to develop, so is unusual before 10 years of age.