Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen duly left - sided AICD is stable in position . Status post median sternotomy , CABG , and cardiac valve replacement . There is marked enlargement of the cardiac silhouette , possibly slightly increased as compared to the prior study . Small left pleural effusion is seen with overlying atelectasis no overt pulmonary edema is seen . There is no pneumothorax .
    OUTPUT:
    
Small left pleural effusion with overlying atelectasis . Marked enlargement of the cardiac silhouette , which may be slightly increased as compared to the prior study . No overt pulmonary edema is seen .