Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Lung hyperexpansion is similar to prior and suggestive of COPD . No focal consolidation , pleural effusion , or pneumothorax . Heart size and cardiomediastinal contours are stable .
    OUTPUT:
    
Lung hyperexpansion without acute cardiopulmonary process .