Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The position of the various lines and tubes is unchanged . A left chest tube is present . There is no evidence of a pneumothorax . Bilateral pleural effusions are again noted . Increased opacities are seen in the left lower lobe in the retrocardiac region , which could represent an area of aspiration pneumonia . This was not present on the prior chest x-ray .
    OUTPUT:
    
New opacifications in left lower lobe , which could represent aspiration pneumonia .