Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Right axillary clips are noted . Right breast shadow is absent compatible with prior mastectomy . The lungs are hyperinflated with upper lobe lucency compatible with underlying emphysema . There is no sign of pneumonia or CHF . No pleural effusion or pneumothorax . Cardiomediastinal silhouette appears normal . Bony structures are intact .
    OUTPUT:
    
No acute intrathoracic process . Emphysema .