Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . Paucity of lung markings in the upper lobes is suggestive of bullous disease . There is minimal peribronchial thickening , particularly at the right hilus . Opacity superimposed on the heart on the lateral projection is more apparent compared with ___ . No focal consolidation , effusion , or pneumothorax is present . Post-radiation changes are seen at the low cervical region and superior mediastinum .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . The paucity of upper lung markings at the bilateral apices suggests emphysema .