Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of the endotracheal tube is in good position . The patient is status post C2 - T2 laminectomy . There is left retrocardiac opacity , likely atelectasis and blunting of the left costophrenic angle , representing a small effusion . No significant interstitial edema . The heart is not enlarged . Mild widening of the superior mediastinum likely due to position and technique . No pneumothorax .
    OUTPUT:
    
The endotracheal tube is in good position . Left lower lobe atelectasis and small left effusion