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The eosinophilic CRSwNP phenotype is clinically characterized by serum eosinophilia, atopy, extensive disease, and poor prognosis compared to the neutrophilic and the noneosinophilic nonneutrophilic groups. We clearly demonstrated that all three subgroups of CRSwNP had characteristic differences in those inflammatory markers, which allows for pathophysiologically meaningful differentiations with likely therapeutic consequences.
Ikeda et al. (Mon,) studied this question.