Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube and Dobbhoff tube are unchanged and in standard positions . A new left upper extremity PICC tip projects 8 .5 cm below the level of the carina , and should be withdrawn 3 cm for more optimal positioning at the cavoatrial junction . Airspace opacities bilaterally , right greater than left and favoring the upper lobes , likely represent a combination of aspiration and atelectasis and are improving from yesterday 's CTA except for focal worsening in left lower lobe . Mild perihilar pulmonary vascular congestion is present . The cardiac silhouette and mediastinal contours remain normal .
    OUTPUT:
    
1 . New left upper extremity PICC placement , terminating in the right atrium ; the tip could be withdrawn 3 cm for more optimal positioning . 2 . Improving bilateral opacities likely reflecting a combination of aspiration pneumonitis and atelectasis . Findings with respect to the PICC placement were discussed with ___ , ___ nurse , at 3 :30 p .m . by phone .