Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chronic changes are seen in the mid thoracic spine with associated dextroscoliosis and changes in the adjacent ribs . The right lung is clear . The cardiomediastinal silhouette is stable . Opacity in the retrocardiac region at the left lung base appears similar compared to multiple priors and is likely in part due to volume loss and elevation of the hemidiaphragm . The superior left lung is clear . Chronic changes are noted at the left shoulder .
    OUTPUT:
    
No significant change since prior , no definite acute cardiopulmonary process .