Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrate hyperinflated lungs bilaterally . Lungs are clear without a focal consolidation to suggest pneumonia . Cardiomediastinal and hilar contours are stable relative to prior examination dated ___ . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
No acute intrathoracic abnormality .