Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Heart size appears mildly enlarged but unchanged . Mediastinal and hilar contours are similar . No pulmonary edema is present . A moderate size left pleural effusion is present along with a small right pleural effusion , both of which have increased in size compared to the previous study . Patchy opacity in the left lung base likely reflects compressive atelectasis . No pneumothorax is detected . There are mild degenerative changes noted in the thoracic spine .
    OUTPUT:
    
Small right and moderate - sized left pleural effusions , increased in the interval . Compressive left basilar atelectasis .