Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph demonstrates a right - sided central venous catheter that terminates in the proximal superior vena cava . Enteric catheter courses below the hemidiaphragm and out of view . Endotracheal tube terminates 5 cm above the carina . The heart is massively enlarged , increased compared to prior study . Dense predominantly perihialr opacifications are most consistent with edema ; however , asymmetrically increased density projecting over the right lung may be due to superimposed infectious process versus layering effusion .
    OUTPUT:
    
Decompensated congestive heart failure . Can not rule out superimposed infection . Possible layering pleural effusion on the right .