Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . There are increased interstitial opacities bilaterally , but no focal opacities . There is no pleural effusion or pneumothorax . A bicameral pacemaker is noted in the left axilla with leads ending in appropriate position .
    OUTPUT:
    
Minimal interstitial edema . No focal opacities suggestive of pneumonia .