Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest was provided portably . Nodularity and scarring is better assessed on CT abdomen and pelvis from earlier today and likely accounts for the subtle opacity in the lower lungs . There is upper lobe lucency compatible with emphysema . The heart appears within normal limits in size . Mediastinal contour appears unremarkable . Imaged bony structures appear intact .
    OUTPUT:
    
Emphysema with nodularity in the lower lungs better assessed on CT abdomen and pelvis from earlier today .