Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unchanged . The pulmonary vasculature is normal . Lungs remain hyperinflated compatible with underlying COPD . Previously demonstrated right apical pneumothorax is not substantially changed in the interval . Scarring within the left apex is unchanged . There is no focal consolidation or pleural effusion . No acute osseous abnormalities demonstrated .
    OUTPUT:
    
No change in size of small to moderate sized right apical pneumothorax .