Abberant right subclavian artery aneurysm

Case contributed by Dr Lee-Anne Slater

Presentation

Pre operative chest x-ray in a smoker.

Patient Data

Age: 76
Gender: Male
Modality: X-ray

A well defined round to oval opacity in the right paratracheal region.

Modality: CT

The right subclavian artery is arising from the arch of aorta directly posterior to the esophagus. There is round aneurysmal dilatation of right subclavian artery near its origin. The aneurysm is abutting and compressing the lateral wall of esophagus and posterior wall of trachea.

Case Discussion

Abberant right subclavian artery (ARSA) is the most common aortic arch anomaly and aneurysmal dilatation of proximal portion of aberrant right subclavian artery is common and referred to as Kommerell diverticulum which appears as bulbous enlargement of proximal subclavian artery at its origin from aortic arch, posterior to oesophagus.

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Case Information

rID: 13747
Diagnostic certainty: Certain
Systems: Vascular, Chest
Tag: crop
Inclusion in quiz mode: Included

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