Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lungs appear hyperinflated and lucent with a linear opacity in the left lower lung which is most compatible with scarring . No focal consolidation concerning for pneumonia . No large effusion or pneumothorax . No congestion or edema . Heart size is normal . Mediastinal contour unremarkable . Degenerative changes are notable at the left glenohumeral joint . Otherwise the bony structures are unremarkable .
    OUTPUT:
    
Probable scarring in the left lower lung with emphysema / COPD . No convincing evidence for pneumonia .