Rib notching refers to deformation of the superior or inferior surface of the rib. It can affect a single rib (from trauma or solitary masses e.g. schwannoma) or can affect multiple ribs.
The differentials differ according to whether it is the superior or inferior surface that is notched.
Superior rib notching
- abnormal osteoblastic activity
- abnormal osteoclastic activity
Inferior rib notching (Roesler sign)
- enlarged collateral vessels
- neurogenic tumours