Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior chest radiograph performed earlier on the same date , there has been near interval resolution of the left pleural effusion . There is still minimal blunting of the left costophrenic angle , which may represent trace residual effusion . No pleural effusion on the right . Mild interstitial pulmonary edema persist . No consolidation . No pneumothorax . Stable cardiomegaly . Median sternotomy wires are intact .
    OUTPUT:
    
1 . Substantial improvement in left pleural effusion , with only trace residual effusion on the left . 2 . Stable mild interstitial pulmonary edema .