Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hyperinflated but clear . The heart size is mildly enlarged . There is no pneumothorax or pleural effusion . The mediastinal contours are normal . The pulmonary vascularity is normal .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Mild cardiomegaly . 3 . Mildly hyperinflated lungs suggestive of chronic obstructive pulmonary disease .