Which of the following causes rib-notching in a chest radiograph?
A. Bidirectional Glenn shunt
B. Modified Blalock Taussig shunt
C. IVC occlusion
D. Coarctation of aorta
Correct answer : D. Coarctation of aorta
Causes of rib notching:
Superior rib notching
Polio
Restrictive lung disease
Neurofibromatosis
Connective tissue disease
Osteogenesis imperfecta
Hyperparathyroidism
Inferior rib notching
Thrombosis of aorta
Coarctation of arota
Blalock Taussig shunt
Occlusion of subclavian artery
Pulmonary AV malformation