Cysteinyl-leukotriene levels in sputum differentiate asthma from rhinitis patients with or without bronchial hyperresponsiveness.
Background We have previously reported that asthma differs from rhinitis with or without bronchial hyperresponsiveness in the perception and degree of lower airway inflammation. Objective The aim of the present study was to investigate whether sputum levels of inflammatory markers could further distinguish these patient groups. Methods Patients with seasonal allergic rhinitis with or without asthm
