Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral effusions appear similar to prior exam . The left lateral border of the heart is obscured by the left effusion . The mediastinal and hilar contours are normal . Signs of pulmonary edema have improved . No focal consolidation or pneumothorax . Calcifications in the aortic arch , sternotomy wires , surgical clips , and tricuspid valve ring appear similar to prior exam .
    OUTPUT:
    
1 . No evidence of acute CHF . 2 . Signs of pulmonary edema have improved . 3 . Bilateral effusions appear similar to prior .