Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left pectoral pacemaker is present with the leads in unchanged position in the right atrium and right ventricle . Sternal wires are intact . Mediastinal clips are unchanged . The is very mild pulmonary edema . There is no consolidation , pleural effusion , or pneumothorax . The mediastinal contours are normal . The heart is mildly enlarged , and unchanged .
    OUTPUT:
    
Very mild pulmonary edema . No evidence of pneumonia .