Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral radiographs of the chest were acquired . A left pacemaker with right atrial and right ventricular leads is again noted , unchanged in position . There are bilateral mid - to - lower lobe hazy opacities , most consistent with mild - to - moderate alveolar pulmonary edema . The upper portions of the lungs are clear . Small bilateral pleural effusions are likely . Moderate cardiomegaly is not significantly changed . The mediastinal contours are stable . The patient is status post midline sternotomy and CABG . There is no pneumothorax . Old right posterolateral rib fractures are again seen .
    OUTPUT:
    
1 . Mild - to - moderate alveolar pulmonary edema . Given that a concomitant bibasilar infectious process can not be excluded , post - diuresis radiographs are recommended . 2 . Probable small bilateral pleural effusions . 3 . Mild - to - moderate cardiomegaly , not significantly changed .