Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size remains mildly enlarged . Mediastinal and hilar contours are unchanged . Scarring within the lung apices is stable . There is mild pulmonary vascular congestion but no overt pulmonary edema is demonstrated . More focal linear opacities within the lung bases likely reflect areas of scarring or atelectasis . No pleural effusion or pneumothorax is demonstrated . Diffuse demineralization the osseous structures is present .
    OUTPUT:
    
Mild pulmonary vascular engorgement and bibasilar atelectasis versus scarring .