ABERRANT RIGHT SUBCLAVIAN ARTERY IN 54-YEAR-OLD PATIENT Incidental finding of lusory artery

Abstract

A 54-year-old woman with an incidental finding of an aberrant right subclavian artery is presented. This finding is also known as arteria lusoria. This can be considered the most common embryologic anomaly of the aortic arch. In the general population, the incidence is estimated between 0.5- 2%.¹ The anomaly is described as four arteries that originate from the aortic arch: right common carotid artery, left common carotid artery, left subclavian, and right subclavian artery (which crosses the midline during its path). The prevalence of this anomaly varies according to the geographic region. In the United States, a prevalence of 0.5% is reported.¹ The lack of standardized treatment protocols forces us to make a decision based on medical criteria, patient’s symptomatology and risk of adverse surgical outcomes. The patient in this case did not present any symptoms, so she did not receive treatment.