Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were provided with patient positioned upright . Lung volumes are low . There are lower lobe opacities , most notable in the right and left perihilar regions . While this may in part reflect crowding of bronchovasculature , a component of pneumonia is likely present . No large effusion or pneumothorax is seen . Heart size can not be assessed . Bony structures are intact .
    OUTPUT:
    
Low lung volumes with probable opacities in the right and left perihilar regions concerning for pneumonia . Consider a followup with improved inspiratory effort to better assess .