Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube tip lies at the lower edge of the clavicular heads , approximately 6 .3 cm above the carina . Right IJ Swan - Ganz catheter tip over proximal right pulmonary artery . Left IJ central line tip over distal SVC . NG tube tip over gastric fundus . Left paratracheal surgical clips again noted . Allowing for overlying lines and tubes , no supine film evidence of pneumothorax is detected . Again seen is diffuse increased alveolar opacity , allowing for technical differences , the appearance is not significantly changed compared with ___ at 20 : 28 . No right effusion identified . Possible minimal blunting of left costophrenic angle is unchanged .
    OUTPUT:
    
1 . Lines and tubes as described . 2 . Diffuse alveolar opacities are similar to the prior study .