Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Paucity of pulmonary markings in the right lung apex is compatible with severe bullous emphysema as seen on concurrent CT C - spine . Subtle opacity is present at the right lung base without definite correlate on the lateral view . The cardiomediastinal silhouette and hilar contours are normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Subtle opacity at the right lung base may be further evaluated with routine oblique views . 2 . Severe bullous emphysema at the right lung apex .