Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph demonstrates interval placement of a right chest tube , which enters the right chest inferolaterally versus the apex of the right chest with its tip located near the level of the mediastinum . There is mild right lower lobe atelectasis . The pleural surfaces are normal . A right anterior mediastinal mass is again noted . The cardiac size is normal , the pulmonary vasculature is normal . There is a tiny apical pneumothorax .
    OUTPUT:
    
1 . Tiny apical pneumothorax , with right chest tube in standard position . 2 . Minimal right lower lobe atelectasis . 3 . Unchanged right anterior mediastinal mass .