Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A moderate to large hiatal hernia is seen with adjacent atelectasis . No definite focal consolidation is seen . There is no pleural effusion or pneumothorax . The patient is status post median sternotomy and CABG . The cardiac silhouette is top - normal to mildly enlarged . The aorta is calcified and tortuous .
    OUTPUT:
    
Moderate to large hiatal hernia with adjacent atelectasis . No definite focal consolidation .