Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is increased opacification of the at the right lung suggesting complete right lung collapse and opacification of the previously noted small aerated portion of the right upper lobe . The left lung appears relatively well aerated . The mediastinum appears shifted to the left despite the collapse suggesting a large right pleural effusion .
    OUTPUT:
    
Increased right lung collapse , now with complete collapse . The mediastinum is however shifted to the left suggesting that there is substantial right pleural effusion .