CTICasesMounier-Kuhn Syndrome
Imaging findings
Chest CT shows a dilated trachea (transverse diameter >3 cm) and main bronchi with a corrugated wall, deep diverticular recesses, and redundant mucosal folds (stack-of-coins appearance). There is associated diffuse bronchiectasis and panlobular emphysema.
Key takeaways
Mounier-Kuhn syndrome is characterized by tracheobronchomegaly with mucosal protrusion between the tracheal cartilage rings, creating a corrugated wall. It leads to impaired clearance of secretions and recurrent bronchiectasis.
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