Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . Aortic knob is calcified . Mediastinal and hilar contours are unremarkable . Calcified pleural plaques within the left chest are unchanged . There are small bilateral pleural effusions , new compared to the prior exam . Bibasilar opacities likely reflect atelectasis . No pneumothorax is seen . Radiopaque dense material within a vertebral body within the upper lumbar spine is likely from prior kyphoplasty .
    OUTPUT:
    
Small bilateral pleural effusions with bibasilar opacities , likely atelectasis though infection is not completely excluded .