Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient remains intubated , the endotracheal tube terminating about 3 cm above the carina . An orogastric tube passes into the stomach , it s distal course not visualized . A right internal jugular catheter terminates in the uppermost part of the atrium . The cardiac , mediastinal and hilar contours appear stable . Overall , aeration appears somewhat better in each lung , but there is still widespread heterogeneous bilateral parenchymal opacification . Pleural effusions are difficult to exclude , but not demonstrated definitively . There is no pneumothorax .
    OUTPUT:
    
Improved aeration , but otherwise unchanged .