544 Vasculitic Subglottic Stenosis: A Question of Immunosuppression?
Abstract Introduction Subglottic stenosis (SGS) is the commonest manifestation of tracheobronchial disease in granulomatosis with polyangiitis (GPA) and carries a high degree of morbidity. Management of SGS-GPA is a double-edged sword. Delayed treatment may cause respiratory compromise and infectious complications. However, aggressive surgical management may initiate a systemic inflammatory response, reactivating the vasculitic cascade and potentially lead to long-term complications including renal vasculitis and consequential end-stage renal failure. There is currently no internationally agreed management strategy for this disease. Method This retrospective review was undertaken to analyse our unique combination of surgical dilatations and immunosuppressive-focused adjuvant management strategy between years 2011-2020. Results Sixteen of our one hundred and nine GPA patients (14.7%) had SGS and were included in our analysis. Whilst three patients (18.8%) improved solely on medical treatment, thirteen (81.3%) required combined surgery and immunosuppression (consisting of cyclophosphamide or Rituximab regimens). Thirty-nine surgical dilatations and two tracheostomies were performed over a mean 53-month follow-up period, with a calculated mean procedure rate of one every 24.8 months (2.7 - 89 months). Conclusions Our current management strategy affords a lower procedure rate at every 24.8 months compared to other published studies with combined procedure rate at every 14.9 months.