Brescia G, et al. - Researchers compared the blood eosinophil and basophil counts in eosinophilic-type chronic rhinosinusitis with nasal polyps (CRSwNP) patients before and after endoscopic sinus surgery. This was the first study to conduct such comparison. Polyps can be cleared, inflammatory tissue can be removed and inflammatory cytokine levels can be reduced with endoscopic sinus surgery. Findings suggested a possibility of endoscopic sinus surgery to coincide with a reduction in blood eosinophils in eosinophilic-type CRSwNP consistently with the described biological mechanism.