Abstract
Chronic rhinosinusitis (CRS) is an inflammatory disease of the nasosinusal mucosa, that commonly present in nasal polyps. CRS is usually associated with allergic fungal rhinosinusitis, respiratory disease exacerbated by aspirin, cystic fibrosis (CF), primary ciliary dyskinesia or immunodeficiency. CRS has no etiology well-defined, may be associated to multiple factors and probably be caus…