Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly better . There is no focal consolidation , pleural effusion or pneumothorax . Mild pulmonary edema is not any worse . Platelike atelectasis at the left lung base is improved . Mediastinal and hilar contours are stable . Heart size is normal . A right tunneled line terminates in the right atrium .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Unchanged mild pulmonary edema .