Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Right internal jugular central venous catheter has been removed . The heart size remains mildly enlarged . Mediastinal and hilar contours are within normal limits . Small bilateral pleural effusions persist , left greater than right , not significantly changed in the interval . Persistent patchy retrocardiac opacity reflecting atelectasis is noted . No new focal consolidation is identified . No pneumothorax is present . There is no pulmonary vascular congestion . Mild multilevel degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
Retrocardiac atelectasis and small bilateral pleural effusions , similar compared to the prior radiograph . No pulmonary edema .