Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated . Pulmonary vascular congestion is mild . There is possible mild trace interstitial edema There is mild central bronchial wall thickening . There is no focal consolidation , effusion , or pneumothorax . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No pneumonia . Findings suggestive of small airways disease .