- Etiology: left pulmonary artery arises from posterior right pulmonary artery
- Imaging: left pulmonary artery traverses mediastinum from right to left coursing between trachea and esophagus, this can lead to fluid + air trapping of lung
- UGI: posterior indentation on trachea + anterior indentation on esophagus
- Clinical: can have associated right lung abnormalities (atelectasis / hypoplasia) and ring sling complex – tracheal ring cartilage + tracheal stenosis
Radiology Cases of Pulmonary Sling

