Saber sheath trachea
Smoker. Chronic cough.
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Narrowing of the tracheal width on the PA image down to approximately 7mm with preserved width on the lateral image measuring around 22mm. The bronchovascular markings are slightly distorted. Appearance consistent with COPD with saber sheath trachea.
Narrowing of the tracheal width on frontal chest radiograph with preserved width on the lateral image consistent with saber sheath trachea in a patient with COPD.