The Journal of laryngology and otology
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To determine the long-term efficacy of submucosal corticosteroid injection plus dilatation for subglottic stenosis as a single modality treatment in granulomatosis with polyangiitis and relapsing polychondritis, as compared with idiopathic subglottic stenosis and traumatic subglottic stenosis. ⋯ Granulomatosis with polyangiitis and relapsing polychondritis patients have better improvement rates than patients with other subglottic stenosis types.