Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . There may be a left retrocardiac opacity . There is bibasilar atelectasis . There is no large pleural effusion or pneumothorax . The heart is not enlarged . The mediastinal and hilar contours are normal . Upper median sternotomy wire is in minimally different orientation since ___ and possibly fractured .
    OUTPUT:
    
1 . Possible left retrocardiac opacity may reflect pneumonia in the right clinical setting . 2 . Possible fractured or minimally displaced superior median sternotomy wire . Please correlate for site of pain , if any , on physical exam .