Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral moderate pleural effusions are unchanged . Due to positioning , the effusions are layered posteriorly . The previously seen opacification in the right mid lung is obscured by the layered effusion . There is no new consolidation or pneumothorax . The size of the cardiac silhouette is at the upper limits of normal . Calcification of the aortic arch and descending aorta are again noted .
    OUTPUT:
    
1 . Stable moderate bilateral effusions . 2 . No significant change from prior radiograph .