Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates improvement in loculated right pleural effusion , with slightly better aeration of the right lung . Hazy right lung opacity likely represents a component of edema , possibly from recent procedure . There is persistent right - sided atelectasis . Extensive pleural involvement of the right lung is redemonstrated . No definite pneumothorax is identified .
    OUTPUT:
    
Decrease in amount of right - sided loculated pleural fluid . Asymmetric right - sided edema .