Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of the ET tube can not be assessed on this film due to overlying spinal hardware . NG tube tip is in the stomach . There is a new left subclavian line with tip in the distal SVC . Right IJ line tip is in the distal SVC . There is a moderate right pleural effusion with right lower lobe volume loss . There is dense retrocardiac opacity compatible with volume loss / infiltrate / effusion . There is mild pulmonary vascular redistribution . The heart size is mildly enlarged .
    OUTPUT:
    
Compared to the prior exam , the aeration of the upper lobes is slightly improved