Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube tip is approximately 2 .3 cm above the carina , similar to prior CT . Right jugular venous line tip is near the junction of the right and left brachiocephalic veins , similar to prior . Left PICC tip is near the SVC / RA junction . 2 enteric tubes course into the stomach and out of view . Lung volumes are even lower compared to prior , causing accentuation of the cardiac silhouette as well as bronchovascular crowding . Retrocardiac opacity is similar to prior . There may be a trace left pleural effusion . There is no pneumothorax . Imaged osseous structures are intact .
    OUTPUT:
    
1 . ET tube tip is approximately 2 .3 cm above the carina , similar to prior CT , and may be retracted approximately 1 cm . 2 . Severe retrocardiac atelectasis is similar to prior . In the appropriate clinical setting , superimposed retrocardiac pneumonia would be difficult to exclude .