High-resolution computed tomography images of smoking-related interstitial lung diseases (ILDs). a) Pulmonary Langerhans cell histiocytosis, b) respiratory bronchiolitis-associated ILD, c) combined pulmonary fibrosis and emphysema, and d) desquamative inter... High-resolution computed tomography images of smoking-related interstitial lung diseases (ILDs). a) Pulmonary Langerhans cell histiocytosis, b) respiratory bronchiolitis-associated ILD, c) combined pulmonary fibrosis and emphysema, and d) desquamative interstitial pneumonia. George A. Margaritopoulos et al. Eur Respir Rev 2015;24:428-435 ©2015 by European Respiratory Society