Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube is in adequate position at 4 cm above the carina . The right subclavian line has been pulled back slightly but it still crosses the midline and its distal end is in the left mediastinum . The distal end is also pointing downward . As mentioned in the last report this is an unusual orientation for a venous catheter in a patient who does not have a persistent left superior vena cava . The exact location of the catheter can not be assessed with the exam . The nasogastric tube is well positioned . Worsening of interstitial and alveolar opacities bilaterally , more prominent in the perihilar region , that is mostly compatible with severe pulmonary edema . A superimposed infection can not be excluded . Does the patient have a limb fracture ? If so , a pulmonary embolism can not be excluded . Tere is no visible pneumothorax .
    OUTPUT:
    
1 . Worsening of diffuse interstitial and alveolar opacities that are mostly compatible with severe pulmonary edema . A superimposed infection can not be excluded . 2 . The right subclavian line has been slightly pulled back but it is still crossing the midline and its distal end is still pointing downwards in the left mediastinum . With this unusual orientation , as said in the previous report , the exact location of the catheter can not be assessed in this exam .