Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A large pneumothorax is identified on the right . An opacity along the right lower lobe appears more prominent on today 's examination and could be related to recent procedure . There is blunting of the left hemidiaphragm , which could represent a small pleural effusion . Left lung is otherwise clear .
    OUTPUT:
    
Large right pneumothorax . These findings were communicated to Dr . ___ via pager by Dr . ___ ___ on ___ at 12 : 10 p .m . , at time of the discovery and were subsequently discussed via telephone at 1 :45 PM .