CTICasesTracheobronchopathia Osteoplastica
Imaging findings
Chest CT demonstrates a thickened, saber-sheath-shaped trachea with multiple, small, irregular, non-calcified cartilaginous nodules projecting into the tracheal lumen along the anterior and lateral walls, sparing the posterior membranous trachea.
Key takeaways
Tracheobronchopathia osteoplastica (TBO) is a benign, chronic disease characterized by submucosal bony and cartilaginous nodules in the trachea and main bronchi. A classic diagnostic clue is the sparing of the posterior membranous trachea on imaging and bronchoscopy, which helps differentiate TBO from amyloidosis or relapsing polychondritis.
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