Cytological and tissue eosinophilia correlations in nasal polyposis.

Background: Eosinophils are possibly the most important inflammatory cells in the pathogenesis of chronic rhinosinusitis with nasal polyposis. Eosinophilic nasal mucosal infiltration is characteristic of nasal polyposis. The aim of this work was to study the possibility of correlations between cytological and tissue eosinophilia in patients with nasal polyposis and with the stage of the disease.