Fig. 3
From: A case of localized tracheobronchial relapsing polychondritis with positive matrilin-1 staining
Imaging findings of bronchoscopy. a Bronchoscopy shows narrowing of the trachea and the straight pattern on the membranous portion with disappearance of the tracheal cartilage. b Endobronchial ultrasonography (EBUS) of trachea shows thickening of the cartilage layer