Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small - moderate size pneumothorax along the right lung with associated volume loss in the right lung . Similar right costophrenic angle pleural thickening is noted . The left lung is clear , and there is no pleural effusion . The heart is top - normal in size , and the mediastinal contours are normal .
    OUTPUT:
    
Small - moderate size right pneumothorax .