Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An aortic graft is in unchanged position . The cardiomediastinal silhouette is otherwise unremarkable . An 8 mm rounded density projecting over the left midlung is consistent with a known granuloma . The lung fields are otherwise clear . There is no pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality .