Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP view of the chest demonstrates a left chest wall pacemaker generator with appropriately positioned right atrial and ventricular leads . Lung volumes are decreased , accentuating the cardiac contours and bronchovascular structures . Lungs appear clear . No pneumothorax or pleural effusion .
    OUTPUT:
    
Low lung volumes with no pneumothorax or pleural effusion .