Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart appears top - normal in size . The hila appear prominent in may be due to mild central congestion . There is opacity at the right lung base concerning for pneumonia . No pleural effusion or pneumothorax . Mild scarring at the left lateral lung base . Bony structures are intact .
    OUTPUT:
    
Right lung base opacity concerning for pneumonia . Mild congestion .