Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Mild enlargement of the cardiac silhouette is slightly increased in size compared to the previous study . Mediastinal and hilar contours are normal . Atherosclerotic calcifications are noted within the thoracic aorta diffusely . Pulmonary vasculature is not engorged . Streaky opacities are demonstrated in both lung bases , most likely reflective of atelectasis . Small bilateral pleural effusions are new compared to the previous exam . No pneumothorax is present . There are no acute osseous abnormalities identified .
    OUTPUT:
    
Small bilateral pleural effusions with bibasilar atelectasis . No pulmonary edema .