Aberrant right subclavian artery

Case contributed by Dr Hani Salam

Presentation

Asthma.

Patient Data

Age: 60
Gender: Male
Modality: X-ray

On frontal radiograph there is a mass effect on the distal tracheal air column in relation to the aortic knuckle. On lateral chest radiograph there is a rounded opacity at Raider triangle exerting mass effect on the dorsal trachea.

Modality: CT

Aberrant right subclavian artery arising from the distal posterior aortic arch and coursing superiorly and to the right behind the trachea and oesophagus.

Case Discussion

An aberrant right subclavian artery arises as the last branch off a left-sided aortic arch and course obliquely and superiorly behind the trachea and oesophagus to resume its normal course. It is typically an isolated anomaly, represents one of the most common aortic arch branching anomalies and affects up to 0.5% of the population, with reported prevalence of 0.4-2%.

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Case Information

rID: 40967
Case created: 9th Nov 2015
Last edited: 13th Aug 2016
Systems: Chest, Vascular
Inclusion in quiz mode: Included

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