Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate significant interval improvement in pulmonary edema , with residual small bilateral pleural effusions , right greater than left . Cardiomegaly is mild , and unchanged . The mediastinal contours remain normal , with note made of calcification of the aortic arch . Median sternotomy wires remain intact . Clips of CABG are present , and there is a stent . There is minimal residual interstitial abnormality .
    OUTPUT:
    
Small bilateral pleural effusions , right greater than left , are the residua of improved congestive heart failure which is now minimal . Mild cardiomegaly is unchanged . There is no evidence for pneumonia .