This site is targeted at medical and radiology professionals, contains user contributed content, and material that may be confusing to a lay audience. Use of this site implies acceptance of our Terms of Use.

Aberrant right subclavian artery

Case contributed by: Dr Bruno Di Muzio

Presentation:

Examination for evaluation of carotid stenosis on previous doppler.

Patient Data:

Age: 81
Gender: Female
Race: Caucasian
Modality: CT

Case Discussion:

Instead of being the first branch (with the right common carotid as the brachiocephalic artery), aberrant right subclavian artery (ARSA) arises on its own as the fourth branch, after the left subclavian artery. It then hooks back to reach the right side. Its relationship to the oesophagus is variable:

•80 % posterior to oesophagus
•15 % between oesophagus and trachea
•5 % anterior to the trachea

Updating… Please wait.
Loadinganimation

 Details successfully updated.

Error Unable to process the form. Check for errors and try again.

 Thank you for updating your details.