Fig. 3
From: Radiology in paediatric non-traumatic thoracic emergencies
a–c A 1-year-old boy with a viral infection and severe breathing problems. a Chest radiography findings raised the suspicion of the narrowing of the distal trachea. b Axial CT and c volume-rendering reconstruction reveal an aberrant right upper bronchus and a long distal tracheal stenosis caused by complete cartilage rings