RT Journal Article SR Electronic A1 Nichols, Emma Hitt T1 Eosinophilic Lung Diseases: What They Are, How They Differ JF MD Conference Express YR 2014 FD SAGE Publications VO 14 IS 45 SP 26 OP 27 DO 10.1177/155989771445010 UL http://mdc.sagepub.com/content/14/45/26.abstract AB Eosinophilia is a condition characterized by increased peripheral levels of eosinophils or eosinophilic infiltration into tissues. This article describes eosinophilic airway diseases, systemic eosinophilic syndromes with pulmonary involvement, and primary pulmonary eosinophilic syndromes.