Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small pleural effusion increased since the prior . No pneumothorax . Minimal subsegmental atelectasis in the right upper lobe . Moderate cardiomegaly . Prior median sternotomy , AVR and dual lead pacer in the right atrium and right ventricle .
    OUTPUT:
    
No pneumothorax . Small pleural effusions .