Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided chest tube is unchanged in position . A previously seen right apical pneumothorax has resolved . The cardiomediastinal hilar contours are within normal limits . The lungs are clear . There is no evidence of pleural effusion .
    OUTPUT:
    
Resolved right apical pneumothorax . No acute cardiopulmonary abnormality .