Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes remain low . Heart size is normal . Mediastinal and hilar contours are unremarkable . There is crowding of the bronchovascular structures without pulmonary edema . Patchy opacities are again noted within the lung bases likely reflective of atelectasis . No focal consolidation , pleural effusion or pneumothorax is otherwise visualized .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis .