Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An endotracheal tube terminates at 3 .7 cm above the carina . A nasogastric tube extends to at least the level the stomach , excluded from the bottom portion of this examination . A right IJ catheter terminates at the upper SVC . A retrocardiac opacification remains unchanged since ___ , with obscuration of the left costophrenic angle likely reflecting superimposed pleural effusion . Previously seen increasing opacity at the right base is unchanged since the ___ study . The lung volumes are low . There is no pneumothorax .
    OUTPUT:
    
Unchanged left retrocardiac opacity and left pleural effusion . Right basilar opacity is unchanged since ___ .