Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to chest radiograph for a few hours earlier , right lateral pneumothorax has increased in size without evidence of tension . Right basal pigtail drainage catheter is still in place . Bibasilar interstitial abnormalities persist . There is no pleural effusion or left pneumothorax . Mediastinal and hilar contours are stable . Heart size is normal .
    OUTPUT:
    
1 . Increasing right lateral pneumothorax . 2 . Unchanged bibasilar interstitial abnormalities .