Bifid rib
- Rib variants occasionally cause confusion when interpreting a chest X-ray - ribs may be missing, hypoplastic, fused or bifid
- These anomalies are rarely of clinical significance
Fused ribs
- The 1st and 2nd ribs are congenitally fused
- The 3rd rib and the other ribs are normal
Hypoplastic rib
- The 4th right rib is small