Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear where not obscured by overlying cardiac leads and wires . Rounded contour adjacent to the descending thoracic aorta above the diaphragm is compatible with hiatal hernia . Cardiomediastinal silhouette is otherwise within normal limits . Aortic valve replacement is again noted . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .