Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low accentuating the bronchovascular markings . There is no frank pulmonary edema , pleural effusions or focal consolidation . Bibasilar opacities may reflect atelectasis or aspiration . The heart size is within normal limits . There is no evidence of prior pacer leads .
    OUTPUT:
    
No signs of prior pacer leads . Bibasilar opacities may reflect atelectasis or aspiration .