Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior chest radiograph from ___ , intra-aortic balloon pump has been repositioned , now proximal to the left main stem bronchus . The Swan - Ganz catheter is projecting in the right pulmonary artery , the device should be pulled back by approximately 3 cm . ET tube terminates 4 cm above the carina . Lung volumes remain low . Slight blunting of the left hemidiaphragm could be attributed to volume loss and a small effusion . Opacification of the right lung base could reflect atelectasis , however , in the appropriate clinical setting , pneumonia should also be considered .
    OUTPUT:
    
1 . Right lower lung opacity which could be related to atelectasis ; however , in the proper clinical setting , pneumonia should also be considered . 2 . Swan - Ganz catheter projects in the right pulmonary artery , withdrawal of approximately 3 cm is recommended . These findings were discussed with ___ by Dr . ___ ___ telephone on ___ at 10 :37 AM , time of discovery .