CTICasesMounier-Kuhn Syndrome (Tracheobronchomegaly) in an Elderly Asymptomatic Male
Imaging findings
Chest CT in an elderly male patient demonstrates severe tracheobronchomegaly with a highly irregular, redundant tracheal wall containing multiple small pouch-like protrusions, consistent with tracheal diverticulosis or pseudodiverticula. Significant dilation of the central and segment-level airways is noted, along with extensive peripheral tree-in-bud nodular opacities, bronchiectasis, and mucus plugging.
Key takeaways
Tracheobronchomegaly (Mounier-Kuhn syndrome) can sometimes be detected as an incidental finding on CT in elderly asymptomatic or minimally symptomatic patients, despite dramatic anatomical airway abnormalities. The presence of redundant membranous tracheal tissue protruding between cartilaginous rings creates characteristic pseudodiverticula.
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