Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube is seen with tip approximately 3 cm from the carina . NG tube passes off the inferior field of view . On the current exam , there is improved aeration of the left lung base with some persistent opacity seen laterally . The lungs are otherwise grossly clear . Mild blunting of the right costophrenic angle could be due to atelectasis , overlying soft tissues or effusion . Cardiac silhouette is enlarged but less so likely due to increased lung volumes .
    OUTPUT:
    
ET and NG tubes as above . Improved aeration of the left lower lung compared to prior with some residual opacity potentially due to atelectasis or consolidation .