Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: All lines and tubes appear unchanged in positioning . Unchanged mild pulmonary edema . The lungs are otherwise clear . Heart size is stable . The mediastinal and hilar contours are stable . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
1 . Unchanged appearance of all lines and tubes , without pneumothorax . 2 . Mild pulmonary edema .