Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right pneumothorax has decreased in size , now best appreciated on the lateral view . There is a small - to - moderate hydropneumothorax . There is new airspace opacification in the lower lobes , left greater than right . Atelectasis and a small left pleural effusion are unchanged . The cardiac and mediastinal contours are unchanged and normal .
    OUTPUT:
    
1 . Unchanged small - to - moderate right hydropneumothorax but decrease in apical pneumothorax component . 2 . New bilateral airspace opacification , left greater than right . The differential includes asymmetric edema , aspiration or multifocal pneumonia .