Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Lung volumes are low compared to the prior examination . Mediastinal contour is unchanged . Lungs are clear without focal consolidation . Basilar opacities likely relate to atelectasis . Blunting of the costophrenic angles is likely due to atelectasis . There is no pneumothorax .
    OUTPUT:
    
Low lung volumes and bibasilar atelectasis .