CTICasesPulmonary Sling
[...]. Pulmonary Sling. CTICases. Published December 8, 2017. https://str-case-explorer.pages.dev/c/um6mw
Imaging findings
Chest CT angiography in a patient presenting with acute chest pain demonstrates a pulmonary sling, where the left pulmonary artery arises anomalously from the posterior aspect of the right pulmonary artery and courses between the trachea and esophagus to reach the left lung. Associated findings include focal narrowing of the distal trachea and a small acute pulmonary embolus in the left pulmonary artery.
Key takeaways
A pulmonary sling (anomalous left pulmonary artery) is a rare congenital vascular anomaly in which the left pulmonary artery loops around the trachea. It is frequently associated with tracheobronchial anomalies, such as complete tracheal rings or tracheomalacia, causing airway obstruction. In adults, it is often diagnosed incidentally during workup for other chest conditions like pulmonary embolism.
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