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 and CABG . No focal consolidation is seen . There is slight blunting of the posterior right costophrenic angle which may be due to a very trace pleural effusion or pleural thickening . No pneumothorax is seen . The cardiac silhouette remains mildly enlarged . Mediastinal contours are stable , with the aorta calcified and tortuous . Mild left basilar atelectasis is seen .
    OUTPUT:
    
Mild left basilar atelectasis . Possible slight blunting of the posterior right costophrenic angle on the lateral view may be due to trace pleural effusion or pleural thickening .