Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are obtained . Dual - lead left - sided pacemaker is again seen , unchanged in position . The patient is status post median sternotomy and CABG . There are slightly low lung volumes . Slight prominence of the central pulmonary vasculature may be due to mild pulmonary vascular engorgement unchanged . The cardiac silhouette is top normal to mildly enlarged . Aorta is tortuous . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Low lung volumes , but otherwise no significant interval change .