Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Following removal of right - sided chest tube , there is a probable tiny right apical pneumothorax present . Widening of right mediastinal contours at the operative site with associated leftward deviation of the trachea are unchanged , as well as a moderate , partially loculated right pleural effusion . Improving opacities in the right mid and lower lung regions probably represent post-operative atelectasis . Additional atelectasis is again demonstrated in the left retrocardiac region , as well as a small left pleural effusion . Right hemidiaphragm remains markedly elevated in the post-operative period . If warranted clinically , right lateral decubitus view could be obtained to differentiate elevation of the diaphragm from a subpulmonic effusion .
    OUTPUT:
    
Tiny right apical pneumothorax following chest tube removal . Persistent mediastinal widening at operative site , which may represent post-operative fluid collection or hematoma .