Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since prior , there has been increased opacification at the right lung base , likely representing a combination of pleural effusion and compressive atelectasis . The left lung is grossly clear . The cardiomediastinal and hilar contours are stable . Monitoring and support devices are unchanged in position .
    OUTPUT:
    
Interval increase opacification in the right lung base which likely represents a combination pleural effusion and compressive atelectasis .