Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a right pigtail catheter , and there is improved aeration of the right lung . A small apical pneumothorax is likely present . The lungs are otherwise clear of focal consolidation , and the cardiac and mediastinal silhouette is within normal limits .
    OUTPUT:
    
Interval placement of a right pigtail catheter with improved aeration of the right lung . A small right apical pneumothorax is likely present .