Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate mildly enlarged hila , unchanged since ___ . The heart , mediastinum , lungs , and pleural surfaces are normal , without evidence of pneumonia .
    OUTPUT:
    
No evidence of pneumonia . A preliminary read was provided , upon request , via telephone by ___ ___ , MD , to ___ , NP , at ___ on ___ .