Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low , resulting in crowding of the bronchovascular structures . Bibasilar opacities are present . There is no pleural effusion , pneumothorax or focal airspace consolidation . Heart is top normal size . The mediastinal and hilar contours are unremarkable .
    OUTPUT:
    
Bibasilar opacities are likely atelectasis in the setting of low lung volumes , however , aspiration or infection should be considered in the appropriate clinical setting . A repeat PA and lateral view of the chest maybe helpful for further assessment of the lung bases .