Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright PA and lateral radiographs of the chest . The lungs are normally expanded . There is an area of scarring or atalectasis at the left base . The cardiomediastinal silhouette and hilar contours are normal . The aorta is calcified and unfolded . There is no pleural effusion or pneumothorax . There is stable dextroconvex curvature centered over the lower thoracic spine and interval development of a compression deformity of a mid thoracic vertebral body of unclear chronicity .
    OUTPUT:
    
1 . No evidence of acute cardiopulmonary abnormality . Mild atelectasis or scarring at the left base . 2 . Interval development of a compression deformity of a mid thoracic vertebral body of unclear chronicity .