Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent minimal enlargement of the cardiac silhouette , consistent with patient 's known cardiomegaly and small pericardial effusion . There is prominence of the pulmonary vasculature as well as Kerley B lines , consistent with mild interstitial pulmonary edema . The lungs are otherwise clear . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Mild interstitial pulmonary edema , coupled with small stable pericardial effusion and cardiomegaly , consistent with decompensated congestive heart failure .