CTICasesTracheobronchomalacia
Imaging findings
Dynamic, temporal resolution CT of the airway demonstrates severe, complete collapse of the trachea and main bronchi during expiration (tracheobronchomalacia). In addition, there is a fixed segment of focal stenosis in the subglottic trachea.
Key takeaways
Tracheobronchomalacia is characterized by weakness of the airway cartilage and/or redundancy of the posterior membranous wall, leading to excessive expiratory collapse (>50% reduction in luminal area). It can be dynamic (collapse only on expiration) or associated with fixed stenosis, and dynamic expiratory CT is the imaging gold standard for diagnosis.
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