CTICasesIdiopathic Plastic Bronchitis
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Imaging findings
Chest CT demonstrates lobulated, low-attenuation grape-like branching structures filling the right infrahilar region and the left mainstem bronchus, causing mucous plugging, left lower lobe collapse, and significant air trapping.
Key takeaways
Plastic bronchitis is a rare condition characterized by the formation of large, cohesive bronchial casts that obstruct the airways. While often associated with congenital heart disease (especially post-Fontan procedure), asthma, or lymphatic anomalies, it can also occur idiopathically.
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