Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are stably hyperinflated . The cardiomediastinal silhouette and pulmonary vasculature are unremarkable and unchanged since the prior examination . Again noted is scarring in the right upper lobe , unchanged since the prior examination . There is no focal consolidation . No large pleural effusion or pneumothorax is present .
    OUTPUT:
    
No acute intrathoracic abnormality .