Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Severe cardiomegaly appears more prominent compared to the prior examination . Cephalization of flow and the general indistinctness of the remaining pulmonary vasculature suggests congestion and mild pulmonary edema . Cardiomediastinal hilar silhouettes are normal . No focal consolidation . No definite pleural effusion . No pneumothorax .
    OUTPUT:
    
Slight interval enlargement of the cardiac silhouette and mild pulmonary edema suggest acute on chronic heart failure .