Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation , pleural effusion , pneumothorax , or pulmonary edema is seen . The lungs are noted to be mildly hyperexpanded , compatible with mild chronic obstructive pulmonary disease . The cardiomediastinal silhouette is stable . No acute bony abnormality is detected .
    OUTPUT:
    
1 . No radiographic evidence for acute cardiopulmonary process . 2 . Mild COPD .