title: Hypersensitivity pneumonitis.
abstract: This article has presented an overview on hypersensitivity pneumonitis, with an emphasis on the immunopathogenic and pathologic features. The disease is related to an immune complex and cell-mediated mechanism. The lung tissue may show a variety of histopathologic changes, most notable being a relatively diffuse lymphocyte-plasma cell interstitial infiltrate in association with small non-necrotizing granulomas.
authors.forename: S
authors.initials: S
authors.lastname: Hammar
mesh_terms: D000542:Alveolitis, Extrinsic Allergic / Q000209:etiology / Q000276:immunology / Q000473:pathology*; D000936:Antigen-Antibody Complex / Q000276:immunology; D000941:Antigens / Q000276:immunology; D003937:Diagnosis, Differential; D006801:Humans; D007111:Immunity, Cellular
chemical_list: D000936:Antigen-Antibody Complex; D000941:Antigens