Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been no significant interval change . A left lower lobe opacity persists and may represent aspiration or pneumonia . Left pleural effusion is unchanged . Endotracheal tube is unchanged in position terminating no less than 4 .5 cm from the carina . Swan - Ganz catheter remains in place and terminates within the right outflow tract . Enteric tube is seen entering the stomach looping back and terminating within the fundus . There is no pneumothorax .
    OUTPUT:
    
No significant change since prior study . Left - sided pleural effusion and left lower lobe opacity persists consistent with aspiration or pneumonia .