Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the earlier same - day chest radiograph , the right apical pneumothorax is minimally worse but substantially improved compared to ___ chest radiograph . The heart is now shifted back to the normal position following chest tube insertion . The right pigtail catheter position has been slightly moved . The left lung is clear without pneumothorax . The heart size is normal . No pulmonary edema or pleural effusion .
    OUTPUT:
    
Minimally worse small right apical pneumothorax since earlier same day chest radiograph . However , the right pneumothorax is substantially improved since ___