Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As on the prior study , there are very low lung volumes . Retrocardiac opacity obscuring the left hemidiaphragm is constant , concerning for infection or sequelae of aspiration in the appropriate clinical setting . Streaky opacities at the right lung base are unchanged and may represent atelectasis . There are bilateral pleural effusions which appear unchanged . There is no pulmonary edema . There is no pneumothorax .
    OUTPUT:
    
1 . Unchanged appearance of very low lung volumes . 2 . Left lower lobe opacity is concerning for pneumonia or sequelae of aspiration in the appropriate clinical setting . 3 . Bilateral pleural effusions are unchanged . Probable right basilar atelectasis .