Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The chest tube has been removed , and there are linear opacities along the prior chest tube course , which represents pleural fluid . There is small amount of subcutaneous air , but no pneumothorax . The biapical scarring and bibasilar predominant fibrosis is unchanged in comparison to the prior radiograph . The lungs are otherwise clear . Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . No pleural effusion is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . Chest tube removed without evidence of pneumothorax . 2 . Persistent unchanged biapical scarring and bibasilar fibrosis .