CTICasesMounier-Kuhn Syndrome with Emphysema
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Imaging findings
Chest radiography and CT demonstrate marked dilatation of the trachea and mainstem bronchi, with prominent tracheal diverticula and a corrugated appearance of the tracheal wall, in a patient with severe centrilobular and paraseptal emphysema.
Key takeaways
Mounier-Kuhn syndrome, or tracheobronchomegaly, can present alongside severe emphysema and chronic obstructive pulmonary disease. The classic "corrugated" appearance of the trachea is caused by the protrusion of redundant mucosa through the weakened tracheobronchial muscle fibers.
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