Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is accentuated as a result of low lung volumes and appears mildly to moderately enlarged , unchanged . Crowding of the bronchovascular structures is noted without overt pulmonary edema . Mediastinal and hilar contours are similar . Patchy opacities in the lung bases likely reflect areas of atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . Oral contrast material is seen within the stomach .
    OUTPUT:
    
Low lung volumes with probable bibasilar atelectasis .