Aberrant subclavian artery

Aberrant subclavian artery
Normal anatomical locations of right and left subclavian arteries
Classification and external resources
Specialty	medical genetics
ICD-10	Q27.8
ICD-9-CM	747.21

Aberrant subclavian artery, or aberrant subclavian artery syndrome, is a rare anatomical variant of the origin of the right or left subclavian artery. This abnormality is the most common congenital vascular anomaly of the aortic arch.

Presentation

MR-angiography of aberrant subclavian artery

The aberrant artery usually arises just distal to the left subclavian artery and crosses in the posterior part of the mediastinum usually behind the oesophagus on its way to the right upper extremity. Such course of this aberrant vessel may cause a vascular ring around the trachea and oesophagus. Dysphagia due to an aberrant right subclavian artery is termed dysphagia lusoria. Palsy of the recurrent laryngeal nerve is termed Ortner's syndrome.

The aberrant right subclavian artery frequently arises from a dilated segment of the proximal descending aorta, the so-called Diverticulum of Kommerell. It is alternatively known as lusorian artery.

Treatment

Surgery is sometimes used to treat the condition.^[1]

Images

Aberrant subclavian artery at axial CT-scan. (1) trachea, (2) esophagus, (3) Aberrant subclavian artery.
Aberrant right subclavian artery at angiography.
Tape-like impression of the esophagus caused by aberrant subclavian artery. Below (arrows) narrowing of the esophagus by a tumor that is causing the swallowing problems.
Aberrant subclavian artery seen at swallowing study: Impression of the esophagus from behind.

References

↑ Kouchoukos NT, Masetti P (April 2007). "Aberrant subclavian artery and Kommerell aneurysm: surgical treatment with a standard approach". The Journal of thoracic and cardiovascular surgery 133 (4): 888–92. doi:10.1016/j.jtcvs.2006.12.005. PMID 17382621.

Congenital vascular defects / Vascular malformation (Q25–Q28, 747)

Great arteries/
other arteries

Aorta	Patent ductus arteriosus Coarctation of the aorta Interrupted aortic arch Double aortic arch Right-sided aortic arch Overriding aorta Aneurysm of sinus of Valsalva Vascular ring

Pulmonary artery	Pulmonary atresia Stenosis of pulmonary artery

Subclavian artery	Aberrant subclavian artery

Umbilical artery	Single umbilical artery

Great veins

Superior/inferior vena cava	Congenital stenosis of vena cava Persistent left superior vena cava

Pulmonary vein	Anomalous pulmonary venous connection (Total, Partial) Scimitar syndrome

Arteriovenous malformation

Cerebral arteriovenous malformation

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