Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy . The patient is rotated somewhat to the left . There is right mid and low to lower lung atelectasis . Patchy opacities in the left lower lobe could be due to atelectasis although aspiration or pneumonia is not excluded . Multiple old right - sided rib deformities are again seen . The aorta is tortuous . The cardiac silhouette is top - normal . No large pleural effusion or pneumothorax is seen . There may be a hiatal hernia . Surgical clips are seen projecting over the right axilla .
    OUTPUT:
    
Right basilar atelectasis . Patchy left base opacity may be due to atelectasis although underlying consolidation due to infection or aspiration not excluded .