Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is at least moderately enlarged . The mediastinal and hilar contours are unchanged . Crowding of the bronchovascular structures is demonstrated without overt pulmonary edema . Patchy opacities are noted in the lung bases , more focal in the left lung base likely reflecting areas of atelectasis . No Large pleural effusion or pneumothorax is identified . Evidence of prior kyphoplasty is seen within the upper lumbar spine .
    OUTPUT:
    
Low lung volumes with patchy bibasilar opacities , more pronounced in the left lung base , likely atelectasis . Please note however that infection can not be completely excluded .