Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Inspiration and expiration chest radiograph . PA views were provided . The lungs are hyperinflated . A dense nodule in the left upper lung is likely a calcified granuloma . There is no evidence of pneumothorax or pleural effusion . Cardiomediastinal silhouette is normal . Bony structures are intact .
    OUTPUT:
    
No signs of pneumothorax .