Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is interval removal of right - sided chest tube . Lungs are better expanded compared to the previous study and with normal volumes . Small right pleural effusion again noted . Right basal atelectasis is improved . Left lung is clear . Heart is normal size and mediastinal contours are unremarkable . No pneumothorax .
    OUTPUT:
    
1 . Persistent small right - sided pleural effusion . 2 . Increased lung volumes and improvement in bibasilar atelectasis .