Bifid rib

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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

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Fused ribs

  • The 1st and 2nd ribs are congenitally fused
  • The 3rd rib and the other ribs are normal

Hypoplastic rib

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Hypoplastic rib

  • The 4th right rib is small

Page author: Salisbury NHS Foundation Trust UK (Read bio)

Last reviewed: October 2019