CTICasesLeft Pulmonary Artery Sling
Imaging findings
CT chest shows the left pulmonary artery originating anomalously from the posterior aspect of the right pulmonary artery, taking a course between the trachea and the esophagus to reach the left hilum. This vascular loop causes extrinsic compression and narrowing of the distal trachea.
Key takeaways
A pulmonary artery sling is a congenital anomaly where the left pulmonary artery arises from the right pulmonary artery. As it courses back to the left, it forms a vascular ring around the right main bronchus and trachea, often presenting in infancy with respiratory distress due to tracheobronchial stenosis, though mild cases can be found incidentally in adults.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Hepatocellular Carcinoma with Intracardiac Extension and Pulmonary EmboliNeoplastic
- Persistent Cavitary CoccidioidomycosisInfection
- Post-Tuberculous BronchostenosisInfection
- Radiation-Induced Necrotic Pulmonary SloughingIatrogenic
- PICC Line-Induced Ventricular TachycardiaIatrogenic
- Dependent Hydrostatic Pulmonary EdemaOther
- Shrinking Lung Syndrome in SLEAutoimmune
- Disseminated Nocardia Nova InfectionInfection
See all cases from January 21, 2022 →