title: Hypersensitivity pneumonitis.
abstract: Clinical manifestations of hypersensitivity pneumonitis may closely mimic other interstitial lung diseases, and the disease onset is usually insidious. High-resolution computed tomography and bronchoalveolar lavage are the sensitive and characteristic diagnostic tests for hypersensitivity pneumonitis. The relevant antigen to hypersensitivity pneumonitis cannot be identified in up to 20% to 30% of patients. Clinicians should be aware that hypersensitivity pneumonitis must be considered in all cases of interstitial lung disease, and a detailed environmental exposure history is mandatory.
authors.affiliation: Department of Molecular and Internal Medicine, Graduate School of Biomedical Sciences, Hiroshima University, Japan.
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Ohshimo
authors.forename: Francesco
authors.initials: F
authors.lastname: Bonella
authors.forename: Josune
authors.initials: J
authors.lastname: Guzman
authors.forename: Ulrich
authors.initials: U
authors.lastname: Costabel
mesh_terms: D000542:Alveolitis, Extrinsic Allergic / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy; D003937:Diagnosis, Differential; D006801:Humans; D011379:Prognosis; D012907:Smoking