CTICasesAcquired Tracheobronchomegaly associated with Pulmonary Fibrosis
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Imaging findings
Chest CT shows a progressive fibrosing lung disorder characterized by subpleural reticulation, traction bronchiectasis, traction bronchiolectasis, and mild ground-glass opacities at the lung bases. Comparison with a study from six years prior reveals progressive, mild dilatation of the trachea and proximal bronchi.
Key takeaways
Acquired tracheomegaly and bronchomegaly (sometimes referred to as acquired Mounier-Kuhn-like syndrome) can occur as a secondary manifestation of severe, progressive interstitial lung disease. The increased elastic recoil and traction forces from surrounding fibrotic lung tissue act on the central airways, leading to progressive dilation of the trachea and major bronchi over time.
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