Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax . No rib fractures are identified . Surgical clips along the left upper paratracheal station are unchanged from prior exam . Compression deformity of a mid thoracic vertebral body is unchanged .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .