Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Four frontal chest radiographs demonstrate a right IJ Swan - Ganz catheter with the tip located in the main pulmonary artery , unchanged from previous imaging . An NG tube is seen passing to the stomach and out of view . ET tube is visualized with the tip 8 cm above the carina . The ET tube needs to be advanced 1 cm . Left IJ is visualized with the tip in the low SVC . Diffuse lung opacities are again seen with slight improvement on the right and no change on the left . Opacities could be consistent with pulmonary edema , pneumonia , or both . The cardiac size is top - normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Swan - Ganz catheter with the tip in the main pulmonary artery . Slightly improved diffuse lung opacities on the right with no change on the left . ET tube needs to be advanced 1 cm .