Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Subtle patchy opacity is seen in the right upper lobe concerning for pneumonia . There is also subtle opacity at the left lung base , which may also represent an early pneumonia . No large effusions or pneumothorax . Cardiomediastinal silhouette is normal . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Right upper lobe pneumonia . Possible early pneumonia at the left lung base .