Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral radiographs were provided . There is no focal consolidation , pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable . Rounded density projecting over the midline over the heart shadow is likely the hiatal hernia as seen on prior CT . There are degenerative changes in the thoracic spine . No free air under the hemidiaphragm . No acute fractures .
    OUTPUT:
    
No acute cardiopulmonary process .