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Updated: Mar 18, 2026
Safety Precautions and Operating Procedures in an ABSL-4 Laboratory: 4. Medical Imaging Procedures
Published on: October 3, 2016
[Bifid rib: the importance of good radiological procedure]
J H G Derriks1, J G A Amaya, J Steens
1Westfriesgasthuis, afd. Orthopedie, Hoorn.
Background:
Bifid rib is a congenital abnormality occurring in about 0.6% of the healthy population.
Case Description:
A 5-year-old boy attended the Orthopaedics outpatient clinic with a swelling on the right of his sternum that was increasing in size. A chest x-ray did not reveal any abnormalities. However, on the CT scan that was then performed we saw a bifurcation of the fourth rib, for which we adopted a watchful waiting treatment strategy. With hindsight, the bifurcation was also visible on the x-ray image but we had not initially recognised it as such.
Conclusion:
Bifurcation of a rib is not always recognised as such. Unnecessary supplementary diagnostics can be avoided with the use of a correctly implemented radiological procedure.
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