In coarctation of aorta, site of rib notching is?
Correct Answer: Inferior to rib
Description: Ans. (b) Inferior to ribCauses of inferior rib notchingCauses of superior rib notching* Arterial: aortic coarctation, aortic thrombosis, pulmonary- oligemia/AV malformation, Blalock Taussig shunt, Tetralogy of fallot, absent pulmonary artery and pulmonary stenosis.* Venous: AV Malfomations of chest wall, superior vena cava or other central venous obstruction.* Neurogenic: Intercostal neuroma, Neurofibromatosis type 1, poliomyelitis.* Osseous: Hyperparathyroidism, Thalassemia* Poliomyelitis* Osteogenesis Imperfecta* Neurofibromatosis* Marfan's Syndrome* Collagen vascular disease* Hyperparathyroidism.
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