Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation , effusion , or pneumothorax . The cardiomediastinal silhouette appears somewhat widened . No radiographic evidence of lymphadenopathy . Imaged osseous structures are intact . There is a hiatal hernia . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
1 . The mediastinum appears somewhat widened , thought to most likely represent lipomatosis . If there is clinical concern for aortic pathology , CT would be the next imaging step . 2 . No pneumonia .