Sarcoidosis, PulmonarySarcoidosisArthropathy, NeurogenicBronchoalveolar Lavage FluidAnti-Bacterial AgentsLung DiseasesTreatment OutcomeGranuloma, Respiratory TractEpithelioid CellsTherapeutic IrrigationPeptidyl-Dipeptidase AGranulomaLungAdrenal Cortex HormonesRespiratory Function TestsBronchoscopyLymphatic DiseasesCD4-CD8 RatioRadiography, ThoracicKveim TestPulmonary FibrosisPrednisolonePulmonary AlveoliBiopsyMacrophages, AlveolarGlucocorticoidsLeukocyte CountLymph NodesTomography, X-Ray ComputedSkin DiseasesVital CapacityErythema NodosumCell CountBronchiPrednisoneCase-Control Studies