Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Unchanged hilar congestion and prominent interstitial marking . There is new blunting of the right costophrenic angle which may reflect a small pleural effusion . No pneumothorax identified . The size the cardiac silhouette is enlarged but unchanged . Degenerative changes of both shoulders .
    OUTPUT:
    
Persisting pulmonary edema with a small right pleural effusion . Cardiomegaly .