Right-sided aortic arch

Case contributed by Sachin Phakey
Diagnosis certain

Presentation

CXR as part of pre-operative workup

Patient Data

Age: 30 years
Gender: Male

CXR

x-ray

Near arch of the aorta is right-sided. Heart size and shape within normal limits. Lung fields are unremarkable.

Case Discussion

This case demonstrates the finding of a right-sided aortic arch.

 

Learning points:

  • right-sided aortic arch is an anatomical variant with the arch of the aorta traversing to the right of the trachea
  • right-sided aortic arch is rare, occurring in ~0.1% of the general population
  • CXR findings consistent with right-sided aortic arch include:
    • 'mass' in the right paratracheal region
    • absence of left aortic contour
    • left tracheal deviation at the aortic arch
    • presence of right-sided descending thoracic aorta

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