Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the recent radiograph of ___ redemonstrated is moderate cardiomegaly . Mild to moderate pulmonary interstitial edema is unchanged . There is no large pleural effusion or pneumothorax . Mild thickening of the minor fissure likely representing small amount of fluid was not evident previously . The sternotomy wires and osseous structures are grossly stable .
    OUTPUT:
    
There is no substantial overall changes compared to the prior study . Persistent moderate cardiomegaly and mild to moderate pulmonary interstitial edema .