Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is a left upper lobe opacity which is concerning for pneumonia . No large effusion or pneumothorax . No signs of congestion or edema . Cardiomediastinal silhouette appears normal . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Left upper lobe pneumonia .