Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . The patient is post CABG . An endotracheal tube has been retracted , now terminating 2 .8 cm above the Carina . Central pulmonary vascular congestion and moderate pulmonary edema have improved , in particular at the lung bases .
    OUTPUT:
    
Interval retraction of the endotracheal tube , now appropriately positioned , with decreased moderate pulmonary edema and improved aeration , particularly at the lung bases .