Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ETT in standard position . Enteric tube tip projects over the expected region the stomach . Right IJ catheter tip projects over the expected region of the SVC - RA junction , unchanged . Aeration has slightly improved in the interim . Opacity projecting in the left lower lobe may correspond to the known malignancy . Small left pleural effusion persists . Appearance of the right lung is overall unchanged . No pneumothorax . No edema .
    OUTPUT:
    
Persistent left pleural effusion and atelectasis , with slight interval improvement in lung aeration .