Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . The lungs are clear without focal consolidation , large effusion or pneumothorax . The heart appears top - normal in size . There is prominence of the superior mediastinum which is unchanged and likely reflects ectatic vasculature . No acute osseous abnormalities . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute findings .