Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a large right - sided pleural effusion which is increased . A moderate to large left - sided pleural effusion is probably unchanged . Extensive atelectasis of each lung bases presumed to coincide . However , apical portions of each lung appear within normal limits without edema . Cardiac , mediastinal and hilar contours are obscured .
    OUTPUT:
    
Large , increased right - sided pleural effusion . Stable moderate to large left - sided pleural effusion .