Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiographs with no prior for comparison demonstrate right hemidiaphragm elevation with eventration . The lungs are otherwise clear . The cardiac silhouette is normal appearing . The mediastinal contours are notable for unfolding of the aortic arch and loss of the AP window . The pulmonary vasculature appears normal .
    OUTPUT:
    
No acute chest pathology .