Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval decrease in right - sided pleural effusion which is now minimal . No evidence of pneumothorax is seen . The appearance of the right apex is stable , better assessed on recent prior PET - CT . Again , the patient is status post median sternotomy .
    OUTPUT:
    
Interval decrease in right - sided pleural effusion which is now minimal . No evidence of pneumothorax . The appearance of the right apex is stable , better assessed on recent prior PET - CT .