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CO2-Lasertonsillotomy Under Local Anesthesia in Adults
Published on: November 6, 2019
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Medical Maintenance Therapy Following Laser Excision in Patients With Granulomatosis With Polyangiitis
Aisha A Aden1, Andrew S Awadallah1,2, Katherine Z Xie1
1Alix School of Medicine, Mayo Clinic, Rochester, Minnesota, USA.
Summary
Rituximab maintenance therapy significantly reduces subglottic stenosis recurrence in granulomatosis with polyangiitis patients after laser excision. Endoscopic CO2 laser excision is a safe and effective initial treatment for this condition.
Area of Science:
- Otolaryngology
- Rheumatology
- Immunology
Background:
- Subglottic stenosis (SGS) is a rare but serious complication of Granulomatosis with Polyangiitis (GPA), an autoimmune vasculitis.
- Patients with cANCA/PR3-positive GPA often develop SGS, requiring intervention.
- Previous treatments for SGS in GPA have varied in efficacy and safety.
Purpose of the Study:
- To evaluate the effectiveness of medical maintenance therapy with rituximab versus other immunosuppressants for preventing recurrence of SGS.
- To assess the safety and efficacy of endoscopic CO2 laser excision as an initial intervention for GPA-associated SGS.
- To identify factors associated with SGS recurrence in GPA patients.
Main Methods:
- Retrospective chart review of 27 patients with cANCA/PR3-positive GPA and SGS treated between 1989 and 2020.
- Analysis of patient demographics, clinical features, and treatment regimens, including endoscopic laser excision and subsequent medical maintenance therapy.
- Comparison of recurrence rates between patients treated with rituximab and those treated with non-rituximab immunosuppressants.
Main Results:
- All 27 patients experienced symptom improvement after initial endoscopic CO2 laser excision.
- Rituximab maintenance therapy was associated with a significantly lower rate of SGS recurrence compared to non-rituximab agents (P=0.040).
- Limited GPA was identified as a risk factor for increased recurrence (P=0.031).
Conclusions:
- Endoscopic CO2 laser excision is a safe and effective local treatment for GPA-associated SGS.
- Rituximab is a valuable medical maintenance therapy option to reduce the risk of SGS recurrence after laser excision in GPA patients.
- Further research may explore optimal timing and duration of rituximab therapy for SGS in GPA.
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