Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is known to have a left hilar mass seen on chest radiograph from 1 day earlier . Please refer to subsequent CT chest for further details . Subtle opacity in the left mid lung peripherally is concerning for pneumonia . Cardiac silhouette appears normal in size . No pneumothorax . Bony structures appear demineralized , though intact .
    OUTPUT:
    
Left hilar mass . Peripheral left mid lung opacity concerning for pneumonia . Please refer to subsequent CT for further details .