Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs remain hyperinflated , consistent with chronic obstructive pulmonary disease . No focal consolidation , large pleural effusion , or evidence of pneumothorax is seen . There is persistent mild blunting of the right costophrenic angle . The cardiac and mediastinal silhouettes are stable and unremarkable . Aortic knob calcification is seen .
    OUTPUT:
    
COPD . No acute cardiopulmonary process .