Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . The upper mediastinum is widened . There is pulmonary interstital edema . There are bibasilar opacities which may represent edema versus less likely infection . There is no pneumothorax The upper mediastinum is widened . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
1 . Widened mediastinum likely represents mediastinal lymphadenopathy . Chest CT is recommended for further characterization . 2 . Pulmonary interstitial edema . 3 . Bibasilar opacities which may represent edema versus infectious etiology .