Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided ECMO cannula tip projects over the space between the eleventh and twelfth ribs and is likely in the IVC . ET tube tip is approximately 2 .6 cm above the carina . OG tube extends into the stomach and the tip is not included in this film . Lung volumes remain low . Previously seen global parenchymal opacities have improved mildly . Heart size is normal . The mediastinal and hilar contours are normal . Moderate left - sided pleural effusion is mildly improved . No pneumothorax .
    OUTPUT:
    
1 . Right - sided ECMO cannula tip is likely in the inferior vena cava . 2 . Previously seen global parenchymal opacities have improved mildly . 3 . Moderate left - sided pleural effusion is mildly improved .