Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The patient is status post median sternotomy . A dual - lead left - sided pacemaker is seen with leads in the expected positions of the right atrium and right ventricle . The posterior costophrenic angles are not well seen on the lateral view which may be technical , although trace pleural effusions may be present . No focal consolidation or pneumothorax is seen . The cardiomediastinal silhouette is stable , with persistent cardiomegaly . There is possible minimal pulmonary vascular congestion .
    OUTPUT:
    
1 . Blunting of posterior costophrenic angle on the lateral view may be technical , although trace pleural effusions may be present . 2 . Persistent cardiomegaly . Possible minimal pulmonary vascular congestion .