Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left hydropneumothorax remains unchanged compared to the prior exam . There is a new right basilar and infrahilar opacity . Left upper lobe and left basilar chest tubes are unchanged . The cardiomediastinal silhouette is stable and there is no evidence of pulmonary edema .
    OUTPUT:
    
New right basilar opacity might represent atelectasis or pneumonia . Otherwise , no change compared to yesterday .