Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate unchanged S - shaped scoliosis of the thoracic spine . The lungs are well expanded and clear , with no evidence of pleural effusion , pulmonary edema , pneumothorax or focal consolidation . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .