Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube , nasogastric and endotracheal tube and nasogastric tube are in unchanged position . Left apically directed right chest tube has been placed in the interval . Persistent slight asymmetric lucency to the left chest wall is less apparent than on the previous study suggesting some improvement in pneumothorax . A lenticular opacity projects over the left lateral chest wall . This could reflect external skin , other external artifact or soft tissue ; however pleural collection at the site of , although felt much less likely . Retrocardiac and right lung opacities are similar in appearance to the previous examination . Severe scoliosis and postsurgical changes are unchanged .
    OUTPUT:
    
Status post chest tube placement with likely decrease in pneumothorax though the exact extent is difficult to assess on this supine film . Lenticular opacity over the left upper chest may be artifact from external structure / soft tissue , or other device vs unlikely possible pleural or chest wall hematoma at the site of chest tube insertion .