Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is unremarkable . Hilar contours are unremarkable . There is no pleural effusion or pneumothoraces . Lungs are clear . Degenerative changes are seen within the spine . No focal opacities are concerning for an infectious process at this time .
    OUTPUT:
    
No evidence of infectious process .