Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . Surgical clips in the lower neck likely reflect prior thyroid surgery . There is mild elevation of the right hemidiaphragm . The lungs appear clear without signs of pneumonia or CHF . No effusion or pneumothorax . Heart size appears normal . There is prominence of the right paratracheal stripe . The bony structures appear intact .
    OUTPUT:
    
Widened mediastinum , which could reflect mediastinal lymphadenopathy or prominent mesiastinal fat / vessels . A dedicated chest CT may be obtained to further assess .