Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest shows surgical clips projecting over the lower neck alongside the trachea consistent with prior surgery . The cardiac silhouette is moderately enlarged but unchanged . The thoracic aorta is large and markedly tortuous with heavy calcification of the aortic knob . The mediastinal and hilar contours are within normal limits and unchanged without drooping of the hila . The lungs are hyperinflated and lucent consistent with COPD . Biapical pleural thickening is unchanged . Chronic branching opacities are redemonstrated in the right suprahilar lung which has been stable over multiple prior studies dating back to ___ , which likely represents bronchial wall thickening or bronchiectasis . Linear opacities in the left lung base are also chronic and likely represent atelectasis or scarring . No pleural effusion , pneumothorax or focal consolidation concerning for pneumonia is detected .
    OUTPUT:
    
1 . No focal consolidation concerning for pneumonia . 2 . Findings consistent with COPD / emphysema . 3 . Chronic right suprahilar bronchial wall thickening or bronchiectasis . 4 . Chronic left basilar atelectasis or scarring .