Author:

Sok JC, Ferguson BJ.

Date: 19 April 2006

Abstract:

Eosinophilic chronic rhinosinusitis (ECRS) encompasses a wide variety of etiologies. To date, a unifying pathophysiologic mechanism remains elusive. Eosinophilia is frequently, but not exclusively, caused by immunoglobulin (Ig)E-mediated hypersensitivity and is dominated by the associated cytokine milieu of Th2 inflammation. The provisional subcategories of ECRS include superantigen-induced eosinophilic chronic rhinosinusitis, allergic fungal sinusitis, nonallergic fungal eosinophilic chronic rhinosinusitis, and aspirin-exacerbated eosinophilic chronic rhinosinusitis. Within each subcategory, recent findings supporting distinct mechanisms that promote eosinophilic infiltration are presented, and, therefore, targeted therapeutic interventions with specific antibacterial, antifungal, or immune modulation may be indicated.

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