Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs remain hyperinflated , suggesting chronic obstructive pulmonary disease . Right mid lung and left basilar linear atelectasis / scarring is seen . Left mid lung atelectasis / scarring is also noted . Single clip is noted in the left mid lung with underlying opacity similar to ___ . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Chronic changes . No definite acute cardiopulmonary process .