Fig. 3From: Differentiating tracheobronchial involvement in granulomatosis with polyangiitis and relapsing polychondritis on chest CT: a cohort studyRelapsing polychondritis. A Unenhanced chest computed tomography shows tracheal wall thickening sparing the posterior membrane and responsible for lumen stenosis (arrow). B On coronal reformation, the tracheal wall thickening is extensive (arrows) and extends to the left main bronchus (arrowhead)Back to article page