Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided AICD / pacemaker device is re - demonstrated with leads in unchanged positions in the right atrium , right ventricle , and coronary sinus . Severe enlargement of the cardiac silhouette is unchanged . The mediastinal and hilar contours are without substantial change . Mild pulmonary edema is worse in the interval . No focal consolidation , pleural effusion or pneumothorax is detected . There are moderate multilevel degenerative changes within the thoracic spine .
    OUTPUT:
    
Mild pulmonary edema .