Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The intra-aortic balloon pump tip is 2 mm below the aortic knob . Right IJ Swan - Ganz catheter tip is in the right main pulmonary artery . There continues to be volume loss in the left lower lung with small left effusion . Mediastinal clips and sternal wires are unchanged . There is mild pulmonary vascular redistribution which is unchanged . There is no new infiltrate . .
    OUTPUT:
    
No change in appearance of the lungs .