Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A new large right pleural effusion is demonstrated . There is an associated right basilar opacity likely reflecting compressive atelectasis . Left lung is clear . There is mild leftward shift of mediastinal structures as result of the pleural effusion . The right hemidiaphragm appears elevated as an abdominal catheter is seen projecting over the right lung base . No pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
Large right pleural effusion with associated right basilar atelectasis .