Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lungs appear hyperinflated with coarsened lung markings compatible with known emphysema . A nodular opacity projecting over the left lower lung may represent a nipple shadow . The aorta appears unfolded . No large effusion , pneumothorax , signs of pneumonia or edema . Heart size is normal . Bony structures are intact .
    OUTPUT:
    
Hyperinflated lungs with coarsened lung markings compatible with known emphysema . Unfolded thoracic aorta .