Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate to severe hyperexpansion is noted without prior studies for comparison . Findings may suggest SMALL AIRWAY OBSTRUCTION , ALTERNATIVELY EMPHYSEMA . There is no focal consolidation , pleural effusion , pulmonary edema , or pneumothorax . The cardiomediastinal contour is normal .
    OUTPUT:
    
1 . POSSIBLE SMALL AIRWAY OBSTRUCTION , ALTERNATIVELY EMPHYSEMA . 2 . NO PNEUMONIA .