Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged , decreased in size compared to the previous radiograph . Mediastinal and hilar contours are unchanged . The pulmonary vasculature is not engorged . Patchy opacities are noted in the lung bases , potentially atelectasis but infection or aspiration can not be excluded . Small bilateral pleural effusions are also present , not substantially changed from the prior study . No pneumothorax is present . No acute osseous abnormalities detected .
    OUTPUT:
    
Bibasilar patchy opacities , potentially atelectasis , though infection or aspiration can not be excluded . Small bilateral pleural effusions .