Tracheal obstruction

Etiology

Tracheal stenosis, acquired (intubation, trauma)
Tracheal stenosis, congenital
Tracheal tumor (primary or metastatic)
Extrinsic compression by tumor of lung, thyroid, thymus; lymphadenopathy; congenital vascular rings; aneurysms
Foreign-body aspiration
Tracheal granulomas or papillomas
Tracheal trauma

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