Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The sternotomy wires appear intact and appropriately aligned . There is a right IJ with the tip in the cavoatrial junction . The left pleural effusion with adjacent atelectasis has decreased in size . There is residual effusion on the left , and bibasilar linear opacities representing atelectasis . There is a retrosternal air - fluid level , which is likely due to the patient 's recent sternotomy . The lungs are otherwise clear . Heart size is stable . The mediastinal and hilar contours are stable . The pulmonary vasculature is normal . No pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . Right IJ in appropriate positioning . 2 . Improvement in combination of pleural effusion and atelectasis in the lower left hemi thorax . 3 . Retrosternal air - fluid level , likely due to recent sternotomy .