Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to prior , there has been no significant interval change given differences in positioning and technique . There is no focal consolidation , effusion , or pneumothorax . Cardiomediastinal silhouette is stable . Tortuosity of the descending thoracic aorta is again noted as well as dense atherosclerotic calcifications at the arch . Compression deformity of a lower thoracic vertebral body is unchanged .
    OUTPUT:
    
No acute cardiopulmonary process .