Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size . The mediastinal and hilar contours appear within normal limits . There is no definite pleural effusion or pneumothorax . There is a widespread but mild interstitial prominence , including cuffed airways bilaterally . No focal consolidation . Bony structures are unremarkable .
    OUTPUT:
    
Findings suggesting mild interstitial abnormality for which differential considerations include an inflammatory process of airways , perhaps atypical infection , or very mild pulmonary vascular congestion .