Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient remains intubated , with the tip of the endotracheal tube positioned 3 .5 cm from the level of the carina . An NG tube is in place , though the tip and side hole are not seen . There is interval improvement from 8 AM in severe bilateral alveolar opacity , with small bilateral pleural effusions . The cardiac silhouette remains markedly enlarged reflecting known moderate pericardial effusion . A left internal jugular central venous catheter has been placed in the interim , the tip projects over the mid SVC . There is no pneumothorax on this limited supine film .
    OUTPUT:
    
1 . Interval left IJ catheter placement ; the tip is positioned in the mid SVC . 2 . Slight improvement from 8 AM of severe alveolar opacities which likely reflect edema superimposed upon disseminated infection .