How would you approach the workup and management of isolated inflammatory subglottic stenosis in a young previously healthy patient that is steroid responsive with a completely negative serologic autoimmune workup?   

This is a relatively unusual situation in that idiopathic subglottic stenosis is typically not managed with systemic immunosuppression. The typical therapies are endoscopic and include dilatation (+/- intralesional corticosteroids), endoscopic resection, and cricotracheal resection. A recent large t...