Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Please note that the patient was unable to lift the arms ; therefore , the lateral chest x-ray is uninterpretable . Frontal radiograph demonstrates blunting of bilateral costophrenic angles , new since the prior study concerning for small effusions . There are no opacities concerning for infection . There is no pulmonary edema . Cardiac silhouette is normal in size .
    OUTPUT:
    
Limited study demonstrating small bilateral pleural effusions .