Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated and the diaphragms are flattened , consistent with COPD . There is mild cardiomegaly . The aorta is slightly unfolded . There is no chf , focal infiltrate , effusion , or pneumothorax . Possible minimal costophrenic angle blunting and scarring posteriorly .
    OUTPUT:
    
Possible COPD . Mild cardiomegaly . No acute pulmonary process .