Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . There may be minimal patchy opacities in the lung bases which are new since the prior study , findings which could suggest early infection . No focal consolidation is present . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Minimal patchy bibasilar opacities appear new from the prior exam and may be suggestive of early infection .