Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to previous exam from ___ and chest CT from ___ . Postoperative changes of right upper lobectomy are again seen . There is superior retraction of the hila with increased density in this region , similar to previous exam . There is no confluent consolidation or effusion . Cardiomediastinal silhouette is stable . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
No significant interval change , no acute cardiopulmonary process .