Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A pleural effusion has increased and now the left hemithorax is almost entirely opacified with a small lucent area in the upper left lung as well as a vague lucency at the left lung apex . These findings could be seen with small areas of residual aerated lung , although not well evaluated on chest radiography . Retrocardiac air bronchograms are visible suggesting opacified lung , probably extensive atelectasis . The opacified left hemithorax bulges rightward with substantial new rightward mediastinal shift . However , the right lung remains clear , without pleural effusion .
    OUTPUT:
    
Nearly complete opacification of the left lung with rightward mass effect suggesting marked increase in a pleural effusion . The possibility of malignancy should be considered in addition to sequelae of cirrhosis .