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