Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right lateral approach chest tube is in unchanged position . The right - sided hemothorax is not appreciably changed since the prior radiograph performed 1 day ago . There is a new right lung base opacity . No pneumothorax . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
1 . New opacity in the right lung base is concerning for the development of hemorrhage or atelectasis . 2 . Unchanged position of a right chest tube .