I. Executive Summary Background The 5 years since the publication of the first International
Consensus Statement on Allergy and Rhinology: Rhinosinusitis (ICAR‐RS) has witnessed …

Importance Chronic rhinosinusitis (CRS) is a broadly defined process that has previously
been used to describe many different sinonasal pathologic conditions from odontogenic …

1.1. Summary The European Position Paper on Rhinosinusitis and Nasal Polyps 2020 is the
update of similar evidence based position papers published in 2005 and 2007 and 2012 (1 …

Rhinitis and rhinosinusitis are the two major clinical entities of chronic upper airway disease.
Chronic rhinosinusitis (CRS) and allergic rhinitis (AR) affect respectively up to 10 and 30 …

Background Persistent mucosal inflammation in patients with chronic rhinosinusitis (CRS)
often results in ongoing symptoms, recurrence of polypoid mucosa, infective exacerbations …

Endonasal endoscopic sinus surgery is the standard procedure for surgery of most
paranasal sinus diseases. Appropriate frame conditions provided, the respective procedures …

Background Chronic rhinosinusitis (CRS) is a heterogeneous disease with an uncertain
pathogenesis. Group 2 innate lymphoid cells (ILC 2s) represent a recently discovered cell …

Background Patients with chronic rhinosinusitis with/without nasal polyps
(CRSwNP/CRSsNP) benefit from endoscopic sinus surgery (ESS), with an estimated …

Background Chronic rhinosinusitis (CRS) is a complex disease that incorporates many
different conditions. Currently, primary CRS is considered a disease of broad airway …

Background: Inflammatory dysfunction is considered an important part of chronic
rhinosinusitis (CRS). Corticosteroid therapy has been widely used in CRS. Effective topical …