Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Low lung volumes results in bronchovascular crowding . There is mild bibasilar atelectasis . No focal consolidation , pleural effusion or pneumothorax . Pulmonary vasculature is within normal limits . The patient is status post CABG with unchanged appearance of the cardiac silhouette . Dextroconvex scoliosis of the thoracic spine and aortic tortuosity are unchanged .
    OUTPUT:
    
No pneumonia , edema , or effusion .