Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated , compatible with history of emphysema noted on prior CT . No focal consolidation , edema , effusion , or pneumothorax . The heart is normal in size . The mediastinum is not widened . No evidence of rib fractures on this nondedicated exam .
    OUTPUT:
    
No focal pneumonia or evidence of heart failure .