Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are somewhat low with subtle lower lung opacity likely representing atelectasis less likely pneumonia . No effusions or pneumothorax . No signs of edema . Heart and mediastinal contours are normal . Bony structures are intact .
    OUTPUT:
    
Subtle opacities in the lower lungs thought likely to represent atelectasis though in the correct clinical setting an early pneumonia is difficult to entirely exclude .