Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are hyperinflated . A new line projecting over the left hilum on the PA view corresponds to a bulla of emphysema in the retrosternal clear space . There is no lung consolidation . There is no pneumothorax or pleural effusion . Mediastinal and cardiac contours are normal .
    OUTPUT:
    
There are no acute cardiopulmonary findings . Changes related to COPD has increased since ___ .