Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate clear , well - expanded lungs , with note made of eventration of the right hemidiaphragm . There is no pleural effusion or pneumothorax . The pulmonary vasculature is normal . The cardiac silhouette is mildly enlarged , unchanged . The aortic valve annulus and coronary arteries are heavily calcified . The mediastinal contours are normal . There is a small hiatal hernia , newly appreciated .
    OUTPUT:
    
1 . No acute chest abnormality . 2 . Small hiatal hernia