Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Moderate cardiomegaly with left ventricular predominance is re - demonstrated . The aorta remains tortuous . The mediastinal and hilar contours are within normal limits . Lungs appear hyperinflated . No pulmonary edema is present . Small bilateral pleural effusions are noted , larger on the left , with associated atelectasis in the lung bases , slightly improved in the interval . Mild degenerative changes are noted in the thoracic spine . Right internal jugular central venous catheter has been removed .
    OUTPUT:
    
Small bilateral pleural effusions , decreased in size compared to the previous study , with improved bibasilar atelectasis .