Radiology – MCQ 20 – Causes of rib notching in chest X-ray

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

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