CTICasesTracheobronchopathia Osteochondroplastica
Imaging findings
CT demonstrates multiple small hyperdense nodular protrusions arising from the inner surface of the trachea along the cartilaginous rings of the anterior and lateral walls, with complete sparing of the posterior membranous trachea. The nodules are most numerous in the upper and mid-trachea and taper near the carina.
Key takeaways
Tracheobronchopathia osteochondroplastica (TBO) is a benign condition characterized by submucosal ossified or calcified nodules on the cartilaginous portions of the trachea, with pathognomonic sparing of the posterior membranous trachea. It is most often an incidental CT finding and rarely causes significant airway obstruction. The CT appearance with cartilaginous calcification can confirm the diagnosis. The differential includes tracheal papillomatosis, which does not spare the posterior wall.
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