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Fig. 3. Sarcoidosis in 30-year-old woman. Coronal
minimum-intensity-projection image obtained from CT scan (3-mm collimation)
reveals diffuse narrowing of left main bronchus (straight arrows) and
its bifurcating branches, surrounded by conglomerate mediastinal and left
hilar lymphadenopathy. Note occlusion of left upper lobe bronchus (curved
arrows) by same process. L = left main bronchus, r = right main
bronchus.