Chronic rhinosinusitis

CRS without nasal polyps

CRS with nasal polyps

Exhalation delivery system with fluticasone

Randomized clinical trials

Sinus opacification

Nasal corticosteroids

coronavirus disease 2019

chronic rhinosinusitis

composite symptom score

exhalation delivery system with fluticasone

Patient Global Impression of Change

randomized controlled trial

22-item Sinonasal Outcome Test

© 2023 The Authors. Published by Elsevier Inc. on behalf of the American Academy of Allergy, Asthma & Immunology.