Bronchiolitis obliterans organizing pneumonia: Pathogenesis, clinical features, imaging and therapy review Sara AG et al. - Persons of all ages can be affected. Dry cough and shortness of breath of 2 weeks to 2 months in duration usually characterizes BOOP. Symptoms persist despite antibiotic therapy. On imaging, air space consolidation can be indistinguishable from chronic eosinophilic pneumonia (CEP), interstitial pneumonitis. The definitive diagnosis is achieved by tissue biopsy. [more...]