RecruitingCombination productPaclitaxel-Coated Pulmonary Balloon for the Treatment of Benign Central Airway StenosisThe OXYGEN-RCT trial is a randomized, controlled, double blinded, prospective, multi-center trial to demonstrate the safety and efficacy in adult benign central airway stenosis. Participates will be in a 1:1 allocation to treatment with the Airiver Pulmonary DCB or standard of care laryngoscopic/bronchoscopic balloon dilation, respectively.