Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperexpanded , with biapical hyperlucency , flattening of the diaphragms , and widening of the retrosternal clear space . Prominent interstitial markings , without focal consolidation . There is no pleural effusion , pneumothorax , or pneumomediastinum . Mild cardiomegaly is unchanged . The aorta is tortuous and unfolded . There is exaggerated thoracic kyphosis with multilevel degenerative changes . Dystrophic left humeral head suggests prior trauma .
    OUTPUT:
    
COPD and mild cardiomegaly . No acute process .