Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right internal jugular central venous catheter is in place with the tip terminating in the low right atrium , which should be retracted approximately 4 .5 cm to place in the low SVC . The patient is status post median sternotomy with multiple intact - appearing sternal wires . Multiple mediastinal surgical clips are compatible with recent CABG . There is improved but persistent opacification of the left lung base and blunting of the left costophrenic angle , compatible with a small left pleural effusion and underlying atelectasis . The right lung is clear . No pneumothorax is detected . The cardiac silhouette remains moderately enlarged but stable . The mediastinal and hilar contours are within normal limits and stable .
    OUTPUT:
    
1 . Improved but persistent left basilar atelectasis and unchanged small left pleural effusion . 2 . No residual left apical pneumothorax . 3 . Right IJ central venous catheter with tip in the low right atrium , should be retracted approximately 4 .5 cm to place in the low SVC .