Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are stable . There is mild cardiomegaly . Pacer lead is in standard position . The aorta is tortuous . The lungs are hyperinflated . There is increasing atelectasis in the left base . The upper lungs are clear . There is no pneumothorax or pleural effusion . There are mild degenerative changes in the thoracic spine
    OUTPUT:
    
No acute cardiopulmonary abnormalities