Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar and mediastinal contours are within normal limits . The lungs are slightly underinflated . A small left pleural effusion appears new since the ___ CT examination . There is no pneumothorax . Linear bibasilar opacities likely reflect atelectasis .
    OUTPUT:
    
1 . New small left pleural effusion . 2 . Bibasilar linear opacities likely reflect atelectasis . A small left consolidation can not be excluded .