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Case of the Week 602




What is the most likely diagnosis?

  • 63 year-old female with cough



Frontal and Lateral Chest Radiograph

  1. Fracture of Clavicle
  2. Aortic Aneurysm
  3. Lymphoma
  4. Aberrant Left Subclavian Artery
  5. Aberrant Right Subclavian Artery

Additional Image - Axial CT and MRI of Chest

 

Additional Images

 

Axial CT and MRI of Chest


Answer:


5.Aberrant Right Subclavian Artery

 

More (Click Discussion Tab)


 

Aberrant Right Subclavian Artery

 

General Considerations

  • Occurs in less than 1% of people
  • RSCA passes posterior to esophagus
  • Pushes trachea and esophagus forward
  • Produces oblique shadow above aortic arch on frontal film
  • Origin of RSCA may be dilated
    • Diverticulum of Kommerell technically was defined with a right aortic arch and anomalous left subclavian artery (LSCA)

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