RIB NOTCHING

• “Rib notches” are peripheral, sharply circumscribed osteolytic lesion on superior or inferior surface of ribs.

 Etiology-

I) Inferior surface

Arterial

Coarction of aorta

• Bilateral
• Seen on lower border of 3^rd to 8^th ribs
• Absent in 1^st and 2^nd ribs
• Present after age of 7years

1. Aortic thrombosis (aortic obstruction)
2. Taussig blalock operation for Fallot’s tetralogy
3. Pulmonary atresia

II) Superior surface

1. Connective tissue disease- SLE, scleroderma, Sjogren’s syndrome
2. Metabolic- hyperparathyroidism
3. Neurogenic- neurofibromatosis

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