Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal radiograph of the chest again demonstrates a Swan - Ganz catheter which is far past midline into likely segmental right pulmonary artery . It should be retracted by at least 6 - 7 cm for more appropriate positioning in the proximal pulmonary artery . As compared to prior study , the lung volumes remain low , accentuating the cardiac contour . The heart and mediastinum are unremarkable . Diffuse right lung opacities are slightly improved with worsened opacification of the left lung , likely equilibrating pulmonary edema . No pleural abnormality is seen .
    OUTPUT:
    
1 . Malpositioned Swan - Ganz catheter , which should be retracted by at least 6 cm for more appropriate positioning . 2 . Equilibrating pulmonary edema , improved on right right and worse on the left . These findings were relayed to Dr . ___ by Dr . ___ , at 9 :37 a .m . , three minutes after discovery .