Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison with chest radiograph from ___ , there is no relevant interval change . The right hemidiaphragm remains elevated anteriorly . There is no focal consolidation , pleural effusion or pneumothorax . Mediastinal and hilar contours are stable . Mild cardiomegaly is unchanged . Note is made of an old posterior right sixth rib fracture .
    OUTPUT:
    
No acute cardiopulmonary radiographic abnormality . If there remains strong clinical suspicion for sternal involvement by malignancy , bone scan or CT would be suggested .