Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are reduced compared to the previous exam . Heart size remains borderline enlarged . The aorta remains tortuous . There is crowding of the bronchovascular structures but no overt pulmonary edema . Patchy opacities are noted within the lung bases , more pronounced on the left , which may reflect areas of atelectasis though infection or aspiration can not be completely excluded . No pleural effusion or pneumothorax is seen . Bullet shaped radiopaque foreign body is noted within the left axilla .
    OUTPUT:
    
Low lung volumes with patchy bibasilar opacities likely reflective of atelectasis . Infection or aspiration can not be excluded in the correct clinical setting .