Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval removal of a right - sided chest tube . A small right apical pneumothorax with medial component is new since ___ . Mediastinal structures and cardiac borders are midline , unchanged . Right upper lobe opacity is likely postoperative . A right upper lobe nodule corresponds to finding on previous CT examination . No significant pleural effusion .
    OUTPUT:
    
Small right apical pneumothorax new since ___ .