Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Left hilar prominence is consistent with known left hilar mass . Left perihilar opacity is unchanged from recent CT and likely reflects a combination of bronchial thickening and tumor . No convincing signs of pneumonia . No large effusion , pneumothorax or definite signs of edema . Cardiac silhouette is stable . Mediastinal contour is unchanged . Bony structures appear intact . Dish related changes of the T - spine noted . Lungs are hyperinflated and lucent consistent with emphysema .
    OUTPUT:
    
Left hilar prominence with perihilar opacity as on recent CT likely reflects known tumor and central airway inflammation .