CTICasesDouble Aortic Arch with Atretic Segment (Vascular Ring)
Imaging findings
Computed tomography demonstrates a double aortic arch with an atretic segment, forming a complete vascular ring around the trachea and esophagus. A posterior impression on the trachea is observed on lateral views, with some tracheal narrowing. The patient also has concurrent sarcoid lymphadenopathy, though the primary focus is the congenital vascular anomaly.
Key takeaways
A double aortic arch with an atretic segment forms a vascular ring that can encircle and compress the trachea and esophagus. While potentially causing airway symptoms, it can also be an asymptomatic, incidental finding. Recognition of the specific branching pattern and the presence of a vascular ring is key. The presence of other pathologies like sarcoidosis may complicate the assessment of symptom etiology.
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