title: Drug-induced lung disease: a pragmatic classification incorporating HRCT appearances.
abstract: Drug-induced lung disease frequently poses a diagnostic challenge. Knowledge of common radiological patterns of lung involvement and corresponding histopathologic diagnoses can facilitate management of individual patients. We outline a framework for understanding radiological and histologic patterns of drug-induced lung disease. Diffuse forms of drug-induced lung disease include processes that mimic acute respiratory distress syndrome (ARDS) and diffuse alveolar hemorrhage. These patterns of drug-induced lung disease are especially common in patients receiving cytotoxic chemotherapeutic agents. Chronic forms of drug-induced lung disease include many of the interstitial pneumonias seen more commonly in patients with idiopathic disease. Bronchiolitis obliterans organizing pneumonia and eosinophilic pneumonia are nonspecific patterns of drug-induced lung disease that are radiologically and histologically indistinguishable from their idiopathic counterparts. In some patients organizing pneumonia and eosinophilic pneumonia mimic the radiological appearance of neoplastic disease.
authors.affiliation: Division of Anatomic Pathology, Mayo Clinic, Rochester, Minnesota 55905, USA. myers.jeffrey@mayo.edu
authors.forename: Jeffrey L
authors.initials: JL
authors.lastname: Myers
authors.forename: Andrew H
authors.initials: AH
authors.lastname: Limper
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Swensen