Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The mildly hyperexpanded lungs are clear . Mild cardiomegaly is also noted . The hilar and cardiomediastinal contours are otherwise normal . There is no pneumothorax or pleural effusion . Pulmonary vascularity is normal .
    OUTPUT:
    
1 . Mild hyperexpansion of lungs suggestive of COPD . 2 . Mild cardiomegaly .