Presentation
Stridor and recurrent chest infection.
Patient Data
![](https://prod-images-static.radiopaedia.org/images/64784128/e2eef177a13d0dc2b429e282859903ba393706c9bb57e2807949826c31dc1d83_thumb.jpeg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
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![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/64784518/7fb1427a4dfad875c139bb3f59d399b228346ad4f24128e6f63355238b4960a3_thumb.jpeg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/64784128/e2eef177a13d0dc2b429e282859903ba393706c9bb57e2807949826c31dc1d83_big_gallery.jpeg)
The left pulmonary artery exhibits an abnormal origin from the right pulmonary artery, forming an incomplete ring between the trachea just above the carina and the oesophagus. Multiple patches of consolidation are scattered across both lung fields (Inflammatory).
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The lower half of the trachea is markedly deviated to the other side. There is an abrupt narrowing of the tracheal lumen at the site of the abnormal passage of the left pulmonary artery.
Case Discussion
The aberrant origin of the left pulmonary artery from the right is one of the rare causes of vascular ring anomalies in paediatrics. This is a case of a symptomatic vascular ring as a result of the tracheal compression by the abnormal course of the left pulmonary artery.