Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are noted to be slightly hyperinflated with associated flattening of the hemidiaphragms . There is no focal consolidation , pleural effusion , pneumothorax , or pulmonary edema identified . The heart size is normal . Mediastinal contours are normal .
    OUTPUT:
    
Mild emphysematous changes . No radiographic evidence for acute cardiopulmonary process .