What is the use of CT scan in sarcoidosis?

Chest CT more sensitive then CXR, sees delineating parenchymal details and adenopathies, thin slice HRCT even better discriminating alveolitis from fibrosis. Nodules (80% are aggregates of granulomas) Cardinal sign: thickening of bronchovascular bundles with beaded appearance, ground glass opacity (16-84%) may form conglomerate masses, shape distortion and cystic destruction, and cavitation in 2.7% of advanced disease We can see bronchial thickening, consolidations, large cystic bolus change and distortion of architecture in advanced disease