Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Aside from left lower lobe atelectasis , the lungs are clear . The hilar and cardiomediastinal contours are normal . There is no pneumothorax . There is no pleural effusion . Pulmonary vascularity is normal . There is a wedge compression fracture of a lower thoracic vertebra with acute anterior angulation of the spine , likely traumatic in origin .
    OUTPUT:
    
1 . No acute cardiopulmonary process . Cardiac silhouette is within normal limits . 2 . Compression fracture of a lower thoracic vertebra with acute anterior angulation of the spinal column , likely posttraumatic and of unknown chronicity . Correlate clinically .