Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest are compared to previous exam from ___ . Postoperative changes of left upper lobectomy are again seen with resection cavity completely opacified , without visualized pneumothorax . Slightly increased linear right basilar opacity is seen . Elsewhere , the lungs are hyperinflated but clear of confluent consolidation . Cardiomediastinal silhouette is stable as are the osseous and soft tissue structures .
    OUTPUT:
    
Right basilar opacity may be due to atelectasis ; however , infection is not completely excluded . Stable postoperative changes of left upper lobectomy .