Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are relatively low lung volumes . Mild central pulmonary vascular congestion is seen . No definite focal consolidation is seen . Mild basilar atelectasis is noted . No pleural effusion or pneumothorax . Single fractured sternotomy wire is re - demonstrated , stable in appearance . Patient is status post CABG . Cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Mild central pulmonary congestion . Low lung volumes .