Mounier-Kuhn syndrome

A 95-year-old man with hypertension presented with altered mental status and progressive weight loss for 8 months. Chest radiograph from a prior admission showed a large trachea (figure 1A, dotted arrows). A chest CT confirmed tracheobronchomegaly (figure 1B,C arrow, trachea measuring 31 mm), pneumomediastinum (figure 1B,C arrowheads), right lower lobe bronchiectasis and opacities in the right lower lung concerning for pneumonia. …