A 66-yr-old woman with dyspnea and weight lossprevious healthy.9 months ago: . .7 months ago: dyspea(DOE, ATS I), weight loss(5~6kg/6mon) local 1 medication. .3 : local CXR, CT refer. IM3 OPD . r/o LCA, r/o pul. TB imp. anti-TB medicaiton . INH, RFP4, EMB, B6, PZA5, PANC 21 W/U .

1977868119778681Mild prominent of right hilum and increased interstitial marking

Bilateral homogeneous lymph node enlargement in superior mediastinal, hilar, and subcarinal area Bronchovascular bundle thickening in RUL

Bronchoscopic biopsyBronchial mucosaSubmucosal non-caseating granuloma

Submucosal non-caseating granuloma, suggestive sarcoidosis