Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Low lung volumes with bibasilar atelectasis noted . No definite signs of pneumonia , CHF . No pleural effusion or pneumothorax . Heart size can not be assessed due to suboptimal inspiratory effort . Mediastinal contour is normal . Bony structures are intact .
    OUTPUT:
    
Bibasilar atelectasis , limited exam without convincing signs of pneumonia .