Bronchial Mucosal Abnormalities in Idiopathic Subglottic Stenosis

OBJECTIVES: Investigate synchronous lower airway findings during bronchoscopy in idiopathic subglottic stenosis (iSGS). METHODS: Retrospective analysis of bronchoscopic images from adult iSGS patients (January 2018-June 2021). Images were reviewed for pits, depressions, nodules, and striations distal to the cricotracheal junction. RESULTS: /FVC < 0.7; two had asthma, one COPD, and one no obstructive diagnosis; none were smokers. CONCLUSION: Bronchial mucosal abnormalities are prevalent in iSGS and may indicate distal airway involvement. Routine flexible bronchoscopy should be considered during evaluation and surveillance.