Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided chest tube tip projects over the upper mediastinum . Persistent small right pleural effusion and tiny pneumothorax at the right costophrenic angle . There is atelectasis of the right middle lobe . Persistent bilateral diffuse vascular prominence noted . Epidural catheter is unchanged in position . Improving right perihilar opacities compared to the most recent prior radiograph . Stable mild cardiomegaly . Bony thorax remains unchanged .
    OUTPUT:
    
Right - sided chest tube to water seal with a tiny right pneumothorax at the costophrenic angle and trace pleural effusion . Interval significant improvement in right perihilar opacities with new right middle lobe atelectasis and unchanged left lower lobe linear atelectasis .