Lung Diseases/diagnosis; Macrophages/pathology; Biopsy; Bronchiolitis/diagnosis; Bronchiolitis/pathology; Cholesterol/analysis; Chronic Disease; Diagnosis, Differential; Eosinophilia/diagnosis; Eosinophilia/pathology; Erdheim-Chester Disease/diagnosis; Erdheim-Chester Disease/pathology; Hemorrhage/pathology; Hemosiderin/analysis; Histiocytes/pathology; Histiocytosis, Langerhans-Cell/diagnosis; Histiocytosis, Langerhans-Cell/pathology; Humans; Inclusion Bodies; Lung Diseases/chemically induced; Lung Diseases/pathology; Lung Diseases, Interstitial/diagnosis; Lung Diseases, Interstitial/pathology; Macrophages/chemistry; Metabolism, Inborn Errors/diagnosis; Metabolism, Inborn Errors/pathology; Pneumoconiosis/diagnosis; Pneumoconiosis/pathology; Pneumonia, Aspiration/diagnosis; Pneumonia, Aspiration/pathology; Smoking/pathology