Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a dual - lead pacemaker with leads again terminating in the right atrium and ventricle , respectively . The cardiac , mediastinal and hilar contours appear stable allowing for small differences in orientation including cardiomegaly . There is similar to mildly increased mild elevation of the left hemidiaphragm , probably due to volume loss . Patchy left basilar opacities are most likely due to atelectasis . There is no definite pleural effusion or pneumothorax . The bones are probably demineralized . Evaluation is limited , but there is no definite fracture .
    OUTPUT:
    
Streaky opacities in the left lower lung , probably due to atelectasis , which has increased somewhat . No definite evidence of injury .