Lung DiseasesLung Diseases, InterstitialLungLung Diseases, ObstructiveLung NeoplasmsPulmonary FibrosisLung TransplantationLung InjuryCarcinoma, Non-Small-Cell LungRespiratory Function TestsCystic FibrosisBronchoalveolar Lavage FluidSensitivity and SpecificityAcute Lung InjuryTomography, X-Ray ComputedFarmer's LungDelayed DiagnosisEarly DiagnosisPulmonary Disease, Chronic ObstructiveRetrospective StudiesIdiopathic Pulmonary FibrosisPrenatal DiagnosisLung Volume MeasurementsPulmonary AlveoliAlveolitis, Extrinsic AllergicVital CapacityForced Expiratory VolumePneumoniaSpirometryChronic DiseasePulmonary EmphysemaInfant, NewbornTotal Lung CapacityRadiography, ThoracicBronchopulmonary DysplasiaBronchiectasisBronchoalveolar LavageSmokingDiagnosisTreatment OutcomePrognosisRisk FactorsRespiratory MucosaBiopsyBronchiProspective StudiesSeverity of Illness IndexBronchoscopyDermatomyositisScleroderma, SystemicReproducibility of ResultsRespiratory Distress Syndrome, NewbornCase-Control StudiesLung Diseases, FungalAsthmaPredictive Value of TestsFollow-Up StudiesRespiration, ArtificialPulmonary Diffusing CapacityDiagnostic ErrorsSarcoidosisPulmonary Surfactant-Associated Protein CSputumBiological MarkersInfant, Premature, DiseasesLung AbscessDyspneaInfant, PrematureSarcoidosis, PulmonaryTime FactorsBronchiolitis ObliteransFatal OutcomeMacrophages, AlveolarCohort StudiesAdministration, InhalationAdenocarcinomaPulmonary SurfactantsDiagnosis, Computer-AssistedDisease ProgressionPneumoconiosisHypertension, PulmonaryEmphysemaBronchitisAirway ObstructionPrevalenceExtravascular Lung WaterPolymyositisPregnancySmall Cell Lung CarcinomaCarcinoma, Small CellImmunohistochemistryAge FactorsSilicosisIncidenceAcute DiseaseRespiratory Distress Syndrome, AdultMice, Inbred C57BLEnzyme-Linked Immunosorbent AssayPulmonary Gas ExchangeOccupational Diseases