Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . A left - sided pacer device is again seen , with leads unchanged in position . The patient is status post median sternotomy and CABG . The right costophrenic angle is not fully included on the frontal view , although no evidence of large pleural effusion is seen on the lateral view , although small pleural effusion is difficult to exclude . The cardiac silhouette remains mildly enlarged . The aorta is calcified and tortuous . Previously seen mild interstitial edema appears slightly improved . Hilar contours are stable .
    OUTPUT:
    
Interstitial edema appears slightly improved . No definite focal consolidation .